{"title":"Dr. Wack \"P21S\" Wheel Cleaner","description":"\u003ch2 id=\"speakable-headline\"\u003eP21S wheel cleaner: acid-free against brake dust, from Dr. Wack\u003c\/h2\u003e\n\n\u003cblockquote id=\"speakable-summary\"\u003e\n  \u003cp\u003e\u003cem\u003eWhat is a P21S wheel cleaner? An acid-free cleaner from Dr. Wack in Ingolstadt that chemically breaks down iron-rich brake dust and turns red as it works. Two versions in the range: POWER GEL for cling-strong cleaning and HIGH END for delicate wheels.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003cp id=\"speakable-definition\"\u003e\u003cstrong\u003eWheel cleaners\u003c\/strong\u003e in Dr. Wack's P21S line are acid-free products that don't scrub baked-in brake dust and rust film off the wheel, they dissolve it chemically. The built-in colour change makes the process visible: when the pH-neutral active hits iron particles, the cleaner shifts from colourless to red-violet. You can see in real time where the grime sits and when it's gone. Within Dr. Wack, P21S is the high-end line, and it's this cleaner family that made the name.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAcid-free, so it's gentle on every type of wheel.\u003c\/strong\u003e Unlike classic acid cleaners, the P21S products go after neither the clear coat nor the sealant. That makes them safe on any wheel, painted, polished, chromed or coated. Typical dwell time is 3 to 5 minutes on a cold wheel.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe colour change is a visible sign it's working.\u003c\/strong\u003e The shift from colourless to red-violet isn't a gimmick, it's a real reaction with the iron in the brake dust. As long as red keeps forming, the cleaner is still working. Once no more red shows, the wheel is clean, no guessing and no reaching for another round.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo versions for two levels of grime.\u003c\/strong\u003e POWER GEL is thick enough to cling to vertical spokes and lift stubborn crust. HIGH END is the finer formula for regularly cleaned or delicate wheels. Between them, the two cover around 90 percent of typical wheel grime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cblockquote class=\"praxistipp\"\u003e\n  \u003cp\u003e\u003cstrong\u003eDetailing1's tip from the shop:\u003c\/strong\u003e people spray the cleaner straight onto a hot wheel right after a drive, and that's the most common slip-up. On a wheel over 40 degrees the active flashes off before it can react and can leave streaks behind. Let the wheel cool down first, work in the shade, and keep the surface wet through the full 3 to 5 minutes of dwell. That way you pull the whole chemical effect out of it, not just half.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhy P21S sets the benchmark for wheel cleaners\u003c\/h3\u003e\n\n\u003cp\u003eThe P21S cleaning gel for wheels is the product the whole line is known for. Dr. Wack in Ingolstadt runs P21S as its high-end line, and this cleaner is the flagship.\u003c\/p\u003e\n\n\u003cp\u003eAt its core is the acid-free, pH-neutral formula with the colour change. Where a lot of cheap cleaners work through acid or strong alkali and put the clear coat and sealant at risk, P21S bonds the iron chemically instead. Brake dust, which bakes into the wheel's clear coat as fine metal particles every time you brake, gets dissolved rather than scoured off. That's easier on the surface, and it's safe even when you're not sure whether your wheel is painted or coated.\u003c\/p\u003e\n\n\u003cp\u003eWhat sets this cleaner apart from the crowd is that it's predictable. The formula has been stable for years, Made in Germany, and it delivers the same result on any wheel. For Dr. Wack, that reliability is the whole promise: you're not buying the cheapest, but you're buying something that works with no nasty surprises. That's why the line keeps landing near the top in comparison tests and has made a name for itself among pros too.\u003c\/p\u003e\n\n\u003cp\u003eOne technical point that often gets missed: baked-in brake dust isn't simple surface dirt. When you brake, red-hot iron particles come off the disc and hit the wheel at high energy, where they literally bake into the clear coat. Water and a brush alone will never pull those particles out fully. This is exactly where the acid-free chemistry comes in, it converts the metallic iron into a water-soluble compound that rinses away with the rest. That's the difference between a wheel that looks clean and one that's genuinely iron-free.\u003c\/p\u003e\n\n\u003ch3\u003eThe two P21S cleaners in the Detailing1 range\u003c\/h3\u003e\n\n\u003cp\u003eIn the Detailing1 range we carry two acid-free cleaners from the P21S line, each aimed clearly at a different job. They don't compete, they complement each other.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003ca href=\"\/en\/products\/dr-wack-p21s-power-gel-felgenreiniger\"\u003eP21S POWER GEL\u003c\/a\u003e is the cling-strong version. Its thick gel consistency stays put on vertical spokes and deep wheel barrels instead of running straight off. That keeps the active in contact with the brake dust for the full 3 to 5 minutes. POWER GEL is the right call when the wheels haven't been cleaned in a while, are heavily crusted, or have a busy multi-spoke design.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003ca href=\"\/en\/products\/dr-wack-p21s-high-end-felgenreiniger\"\u003eP21S HIGH END\u003c\/a\u003e is the finer formula for regular use. It suits wheels that get cleaned often and have only light to moderate brake dust on them, as well as particularly delicate or high-gloss finishes. If you clean your wheels every two to three weeks, HIGH END usually covers everything on its own.\u003c\/p\u003e\n\n\u003cp\u003eBoth share the same basic principle, acid-free, colour change, every type of wheel, and differ mainly in consistency and cleaning power. Keep both on the shelf and you've got everything covered, from a crusted winter set to a freshly sealed summer wheel. That's exactly the upside of a line with two tuned strengths instead of a single compromise product.\u003c\/p\u003e\n\n\u003ch3\u003ePOWER GEL or HIGH END, which one fits\u003c\/h3\u003e\n\n\u003cp\u003eThe choice between the two comes down to two questions: how dirty the wheel is, and how often you clean.\u003c\/p\u003e\n\n\u003cp\u003eGrab the POWER GEL when the wheels are visibly crusted, haven't been touched in a long time, or have a complex shape. The gel clings, doesn't run off, and gives the active the dwell time it needs on a vertical face. On a winter set caked with road-salt brake dust, or on the first clean after a long stretch of neglect, POWER GEL is the safe bet. The thicker layer also means less re-spraying and fewer top-ups.\u003c\/p\u003e\n\n\u003cp\u003eGrab the HIGH END when your wheels are in good shape anyway and you keep on top of them at short intervals. The finer formula is plenty for normal everyday grime and is gentler on the surface. On a delicate polished or chromed wheel you don't want to overwork, HIGH END really plays to its strength. It shows in usage too: clean regularly and you need less product each time, because a thick layer of dirt never builds up in the first place.\u003c\/p\u003e\n\n\u003cp\u003eA simple rule of thumb from what we see day-to-day: POWER GEL for the problem, HIGH END for the routine. If you only want to buy one and have to cover different levels of grime, POWER GEL is the more flexible pick, since it handles light dirt just as easily. If you only ever clean well-kept wheels at short intervals, HIGH END is the finer fit. Ideally you keep both within reach and grab the right strength for the state of the wheel.\u003c\/p\u003e\n\n\u003ch3\u003eHow to use the P21S cleaners the right way\u003c\/h3\u003e\n\n\u003cp\u003eThe workflow is the same for both versions and done in under 10 minutes per wheel. What matters most is temperature and dwell time.\u003c\/p\u003e\n\n\u003cp\u003eStep one: the wheel has to be cold and ideally pre-rinsed. Rinse off loose grit with water so the cleaner can go straight at the baked-in brake dust instead of sand and muck. A cold wheel under 30 degrees is a must, otherwise the active flashes off. Step two: lay the product on generously and all over, until the whole wheel is wetted. With POWER GEL you go on thicker; HIGH END spreads out finer.\u003c\/p\u003e\n\n\u003cp\u003eStep three: let it dwell for 3 to 5 minutes. During that time the colour change shows where it's working, the red-violet streaks are the dissolved iron brake dust. On heavy grime you can work through the spokes with a wheel brush or a soft detailing brush without scratching. Important: never let the cleaner dry out completely. If the wheel is sitting in the sun, cut the dwell time or keep it wet in between.\u003c\/p\u003e\n\n\u003cp\u003eStep four: rinse thoroughly with clean water or a pressure washer until no more red runs off. Then dry the wheel so you don't leave water spots. If you want to protect it afterwards, follow up with a wheel sealant, the next clean then goes much easier because the brake dust has less to hold on to. On very heavily crusted wheels a second pass can make sense: after the first rinse, simply reapply, and the last deep-seated particles let go too.\u003c\/p\u003e\n\n\u003cp\u003eA word on safety: even though the acid-free formula is gentle on materials, disposable gloves and good ventilation are part of clean work. Never spray the cleaner onto a wheel that's still warm and mounted on a rolling car, and avoid long contact with bare aluminium brake calipers. Stick to those three points and you'll work safely and get an even result on every wheel, with no streaks or residue.\u003c\/p\u003e\n\n\u003ch3\u003eP21S compared with Sonax, Koch-Chemie and Gyeon\u003c\/h3\u003e\n\n\u003cp\u003eSeveral makers offer acid-free cleaners with an iron indicator. The honest placement: P21S is in the top group, but not alone at the top.\u003c\/p\u003e\n\n\u003cp\u003eSonax, with the Felgenbeast and FelgenReiniger Plus, offers a broad, easy-to-find range that often sits a little cheaper and cleans solidly day to day. Koch-Chemie, with its reactive products, aims more at the demanding detailer and delivers very aggressive iron-lifting power. Gyeon sits in the premium segment with products like Iron and WheelCleaner, tuned for coated wheels. Against all that, the P21S line is the predictable all-rounder: not the cheapest, not the most specialised, but one of the most reliable across every type of wheel.\u003c\/p\u003e\n\n\u003cp\u003eWhere P21S hits its limit: on extremely neglected wheels with years of baked-on build-up, or on an all-out reconditioning followed by a multi-year ceramic coating, a more specialised brand is sometimes the better addition. For classic wheel cleaning on a care interval of one to four weeks, though, P21S is hard to beat. If you're already in the Dr. Wack world and use A1 on the car and S100 on the bike, P21S gives you the matching wheel counterpart from a single source. For a lot of people that brand consistency is worth more than a marginally stronger rival product, because they're betting on a proven system with predictable results.\u003c\/p\u003e\n\n\u003ch3\u003eWho the P21S cleaner is worth it for\u003c\/h3\u003e\n\n\u003cp\u003eThe P21S cleaner for wheels is worth it for anyone who wants their wheels clean without risking the paint and sealant.\u003c\/p\u003e\n\n\u003cp\u003eFor the beginner, being acid-free is the strongest argument: you can't really go wrong, because the cleaner doesn't attack the surface on any type of wheel. The colour change also takes away the doubt about whether the wheel is already clean. For the keen detailer who cares for their wheels regularly, the fine HIGH END formula is the right routine choice. And for anyone who has to bring a crusted winter set or neglected wheels back into shape, POWER GEL brings the cling and cleaning power you need.\u003c\/p\u003e\n\n\u003cp\u003eAnyone who wants to keep their car's value is in the right place too. Clean, iron-free wheels aren't just a looks thing: baked-in brake dust can eat into the wheel's clear coat over time and lead to pitting. A regularly used acid-free cleaner prevents that without stressing the surface itself. Over the years, that's cheap protection for an expensive part.\u003c\/p\u003e\n\n\u003cp\u003eOur starter tip: if you only buy one product and want to cover different levels of grime, grab the \u003ca href=\"\/en\/products\/dr-wack-p21s-power-gel-felgenreiniger\"\u003eP21S POWER GEL\u003c\/a\u003e, it's more flexible. If you only clean well-kept wheels at short intervals, HIGH END is the finer answer. You'll find both cleaners together in this category, the matching protection product in the \u003ca href=\"\/en\/collections\/dr-wack-p21s\"\u003eP21S wheel care\u003c\/a\u003e collection, and the whole Dr. Wack range via the \u003ca href=\"\/en\/collections\/dr-wack\"\u003eDr. Wack main page\u003c\/a\u003e. That way you build a seamless wheel system from a single source, from cleaner to sealant.\u003c\/p\u003e\n","products":[{"product_id":"dr-wack-p21s-power-gel-felgenreiniger","title":"P21S \"POWER GEL\" Wheel Cleaner","description":"\u003ch2 class=\"p1\"\u003eDr. Wack P21S \"POWER GEL\" – the original for uncompromisingly clean wheels\u003cb\u003e\u003c\/b\u003e\n\u003c\/h2\u003e\n\u003cblockquote\u003e\n\u003cp class=\"p1\"\u003e\u003cem\u003eWhy is the Dr. Wack P21S POWER GEL wheel cleaner so effective?\u003c\/em\u003e Because its gel formula breaks down even stubborn brake dust without any acid, stays gentle on the material, and gives you a clean, glossy result in just 3–5 minutes.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003cp class=\"p3\"\u003eThe \u003cspan class=\"s2\"\u003e\u003cb\u003eDr. Wack P21S \"POWER GEL\" wheel cleaner\u003c\/b\u003e\u003c\/span\u003e has been the original among wheel cleaners since 1976 – a repeat test winner and still a real benchmark in car care today. Its highly effective gel formula reliably dissolves even badly baked-on brake dust, oil and rubber residue – completely acid-free. Alloy, steel or chrome wheels: the POWER GEL cleans safely, fast and gently on the material, with zero risk to paint, the wheel barrel or TPMS sensors.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTop cleaning power without acid:\u003c\/b\u003e\u003c\/span\u003e Pulls off even baked-on brake residue and winter crust without attacking the wheel surface or bleaching the material.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eGel formula for maximum grip:\u003c\/b\u003e\u003c\/span\u003e The POWER GEL clings longer, doesn't run off and works on its own – for a thorough deep clean with low usage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eFast, safe application:\u003c\/b\u003e\u003c\/span\u003e Just spray it on, let it dwell for 3–5 minutes, rinse – done. No scrubbing, no risk to sensitive coatings or valves.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eMaterial-friendly active formula and technology\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eThe strength of the \u003cspan class=\"s2\"\u003e\u003cb\u003eP21S POWER GEL\u003c\/b\u003e\u003c\/span\u003e lies in its chemically balanced, completely acid-free make-up. Dr. Wack relies on a highly active surfactant system with a special complexing agent based on \u003ci\u003esodium mercaptoacetate\u003c\/i\u003e. This molecule reacts specifically with metallic brake residue (mainly iron oxides) and dissolves it without attacking the sensitive metals or paint. The colour change – from clear to violet – shows the active cleaning phase. Thanks to the gel structure, the cleaner stays put even on vertical surfaces, which clearly boosts dwell time and cleaning power. The high viscosity makes sure brake dust deep in the pores gets broken down too, before it's rinsed away completely. The result: evenly clean wheels with their original shine – no scrubbing, no micro-scratches.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication and day-to-day tips for perfect results\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eUsing the \u003cspan class=\"s2\"\u003e\u003cb\u003eP21S POWER GEL wheel cleaner\u003c\/b\u003e\u003c\/span\u003e is easy, but like with proper detailing you want to be deliberate about it. Spray the product evenly onto the dry, cooled-down wheel. Thanks to the gel grip a thin film forms right away that clings even in hard-to-reach spots – between spokes, in the wheel barrel or behind the bolts. After about 3–5 minutes of dwell time the cleaner turns dark red to violet: that's the sign brake dust and metal particles are actively being dissolved. Then just rinse it off with a strong water jet or pressure washer. For a perfect finish on badly neglected wheels you can help things along with a soft wheel brush. Important: don't let it dry on, and don't use it in direct sun. Since the cleaner is completely acid-free, the risk of corrosion or dull spots stays at zero – even on polished alloys or sensitive multi-piece wheels. It's also TPMS-compatible and biodegradable, so it's safe in everyday use. After cleaning, a wheel sealant is worth doing to make fresh dirt stick less.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eResults, durability and use cases\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eWhat we see day-to-day is that the \u003cspan class=\"s2\"\u003e\u003cb\u003eP21S POWER GEL\u003c\/b\u003e\u003c\/span\u003e delivers an extremely clean, even finish with no residue. Brake dust, oil and tar particles come off completely, the wheel surface feels smooth and clean – the perfect base for follow-up care or a sealant. Hard-driven cars or vehicles with open brake setups in particular benefit from the strong yet gentle cleaning. The gel-like formulation makes the product go a long way, since less cleaner runs off the wheel. Thanks to its pH-neutral action the POWER GEL doesn't attack paint, plastic parts or valves and can be used regularly. It's ideal for classics, chrome wheels or multi-piece alloys too – even with frequent use you get no stains or changes in the surface structure. The difference is visible and tangible straight away: smooth, glossy wheels with no residue – and all in a few minutes.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cb\u003eCommon questions about Dr. Wack P21S POWER GEL wheel cleaner\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHow long should the P21S POWER GEL dwell? \u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e3 to 5 minutes is plenty. Then just rinse off with a strong water jet. If needed, give it a quick help with a soft brush.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eCan I use the cleaner on warm wheels? \u003c\/b\u003e\u003cb\u003e\u003c\/b\u003eNo. The wheels should be cool and dry so the cleaner doesn't dry on and works at its best.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eIs the P21S POWER GEL also suitable for matte or painted wheels? \u003c\/b\u003e\u003cb\u003e\u003c\/b\u003eYes, because it's completely acid-free. It doesn't attack paint, powder coatings or matte surfaces.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHow often can I use the cleaner? \u003c\/b\u003e\u003cb\u003e\u003c\/b\u003eRegularly – even with every wash. The pH-neutral formula is gentle enough for ongoing use.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eWhy does the cleaner turn violet? \u003c\/b\u003e\u003cb\u003e\u003c\/b\u003eThat's the reaction with iron-rich brake dust. The colour change shows the dirt is being actively dissolved.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003csmall\u003eLast updated: 27.10.2025 — Author: Daniel (Detailing1)\u003c\/small\u003e\u003c\/p\u003e","brand":"Dr. Wack \"P21S\"","offers":[{"title":"750ml","offer_id":54707217039695,"sku":"D1-DRW-1253","price":17.93,"currency_code":"EUR","in_stock":true},{"title":"1000ml","offer_id":56260456874319,"sku":"D1-DRW-1252","price":23.39,"currency_code":"EUR","in_stock":true},{"title":"100ml","offer_id":56260456907087,"sku":"D1-DRW-1251","price":5.9,"currency_code":"EUR","in_stock":true},{"title":"2 liters","offer_id":54707217137999,"sku":"D1-DRW-1265","price":31.19,"currency_code":"EUR","in_stock":true},{"title":"5 liters","offer_id":54707217170767,"sku":"D1-DRW-1256","price":78.77,"currency_code":"EUR","in_stock":true},{"title":"25 liters","offer_id":56260456939855,"sku":"D1-DRW-1257","price":394.67,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/1253_P21S-FRPG-Flasche-750ml-Haube-2022_1500x1500_b375d4d4-7e1c-461c-a693-afbe59ffdf40.png?v=1742506797"},{"product_id":"dr-wack-p21s-high-end-felgenreiniger","title":"P21S \"HIGH END\" Wheel Cleaner","description":"\u003ch2 data-start=\"0\" data-end=\"88\"\u003eDr. Wack P21S \"HIGH END\" Wheel Cleaner – uncompromising power, easy on the metal\u003c\/h2\u003e\n\u003cblockquote\u003e\n\u003cp data-start=\"90\" data-end=\"325\"\u003e\u003cem data-start=\"90\" data-end=\"146\"\u003eHow does the Dr. Wack P21S \"High End\" Wheel Cleaner work?\u003c\/em\u003e\u003cbr data-start=\"146\" data-end=\"149\"\u003eIt pulls even baked-on brake dust, oil and rubber off the wheel on its own thanks to a clinging gel and a colour indicator – fast, gentle and even when it's cold out.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr data-start=\"327\" data-end=\"330\"\u003e\n\u003cp data-start=\"332\" data-end=\"817\"\u003eThe \u003cstrong data-start=\"336\" data-end=\"379\"\u003eDr. Wack P21S \"High End\" Wheel Cleaner\u003c\/strong\u003e is the premium wheel cleaner for anyone who wants flat-out cleaning power without putting paint, metal or seals at risk. Alloy, chrome or painted wheels – the thick gel formula clings instead of running off, lifts even burnt-in brake residue and gets you a visibly clean result in just a few minutes. Made for keen drivers and enthusiasts who care about shiny wheels and a safe job.\u003c\/p\u003e\n\u003cul data-start=\"839\" data-end=\"1242\"\u003e\n\u003cli data-start=\"839\" data-end=\"973\"\u003e\n\u003cp data-start=\"841\" data-end=\"973\"\u003e\u003cstrong data-start=\"841\" data-end=\"870\"\u003eMaximum cleaning power:\u003c\/strong\u003e Reliably clears even heavy brake dust, oil and rubber residue – no scrubbing by hand.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"974\" data-end=\"1098\"\u003e\n\u003cp data-start=\"976\" data-end=\"1098\"\u003e\u003cstrong data-start=\"976\" data-end=\"1006\"\u003eGentle gel technology:\u003c\/strong\u003e Doesn't run off, clings for ages and cleans deep without attacking sensitive surfaces.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1099\" data-end=\"1242\"\u003e\n\u003cp data-start=\"1101\" data-end=\"1242\"\u003e\u003cstrong data-start=\"1101\" data-end=\"1128\"\u003eSafe \u0026amp; eco-minded:\u003c\/strong\u003e pH-neutral, fine for TPMS sensors and biodegradable – uncompromising and responsible at the same time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1244\" data-end=\"1247\"\u003e\n\u003ch3 data-start=\"1249\" data-end=\"1314\"\u003eGel formula \u0026amp; colour indicator – how the cleaning works\u003c\/h3\u003e\n\u003cp data-start=\"1315\" data-end=\"2042\"\u003eThe special gel formula in the \u003cstrong data-start=\"1344\" data-end=\"1379\"\u003eP21S \"High End\" Wheel Cleaner\u003c\/strong\u003e was built to grab onto the wheel and stay put. Instead of running off, the gel sits evenly across the surface – even on vertical faces. That gives the active components longer to work and they bite harder. Over the dwell time (about 3–5 minutes) they cut through layers of brake dust, metal particles and oil residue. The signature colour indicator shows you the progress: once the cleaner turns purple to black, the dirt is lifted and rinses straight off. That colour change comes from iron complexation – a visible sign the chemistry is doing its thing.\u003c\/p\u003e\n\u003ch3 data-start=\"2044\" data-end=\"2082\"\u003eHow to use it \u0026amp; the right dwell time\u003c\/h3\u003e\n\u003cp data-start=\"2083\" data-end=\"2810\"\u003eUsing the \u003cstrong data-start=\"2101\" data-end=\"2145\"\u003eDr. Wack P21S \"High End\" Wheel Cleaner\u003c\/strong\u003e couldn't be simpler or safer. Spray it evenly onto dry, cooled-down wheels – best from about 20 cm away. Then let it dwell for 3–5 minutes, until the purple colour is clearly showing. After that, rinse off well with a strong jet or pressure washer. With really baked-in grime a soft wheel-brush set gives it a hand. Important: don't use it on hot wheels or in direct sun. The cleaner is fine on all materials, including delicate TPMS sensors. Thanks to the pH-neutral formula there's no corrosion on metal, paint or plastic parts.\u003c\/p\u003e\n\u003ch3 data-start=\"2812\" data-end=\"2871\"\u003eResults, material safety \u0026amp; where to use it\u003c\/h3\u003e\n\u003cp data-start=\"2872\" data-end=\"3654\"\u003eThe \u003cstrong data-start=\"2876\" data-end=\"2910\"\u003eP21S \"High End\" Wheel Cleaner\u003c\/strong\u003e delivers no-compromise results – even where other products tap out. Brake dust and burnt-in particles come off completely, with no reworking and no brush needed. The wheels get their original shine back, with no dull film or streaks. Its high material tolerance makes it ideal for every wheel type, including chromed or polished surfaces. Even in cold weather it keeps working hard, which makes it the perfect all-year cleaner. For full care we'd suggest laying down a \u003cstrong data-start=\"3501\" data-end=\"3523\"\u003ewheel sealant\u003c\/strong\u003e like Dr. Wack P21S Felgen-Wachs after cleaning – it protects against fresh grime long-term and makes the next clean easier.\u003c\/p\u003e\n\u003chr data-start=\"3656\" data-end=\"3659\"\u003e\n\u003ch4 data-start=\"3661\" data-end=\"3723\"\u003eCommon questions about Dr. Wack P21S \"High End\" Wheel Cleaner\u003c\/h4\u003e\n\u003cp data-start=\"3725\" data-end=\"3918\"\u003e\u003cstrong data-start=\"3725\" data-end=\"3789\"\u003eHow long should the P21S \"High End\" Wheel Cleaner dwell?\u003c\/strong\u003e\u003cbr data-start=\"3789\" data-end=\"3792\"\u003e3–5 minutes is ideal. In that time the colour indicator lifts the dirt visibly. Then just rinse it off with water.\u003c\/p\u003e\n\u003cp data-start=\"3920\" data-end=\"4130\"\u003e\u003cstrong data-start=\"3920\" data-end=\"4000\"\u003eCan I use it on painted or chromed wheels too?\u003c\/strong\u003e\u003cbr data-start=\"4000\" data-end=\"4003\"\u003eYes – it's pH-neutral and gentle, so you can use it safely on all common wheel finishes.\u003c\/p\u003e\n\u003cp data-start=\"4132\" data-end=\"4298\"\u003e\u003cstrong data-start=\"4132\" data-end=\"4184\"\u003eIs it suitable for winter wheels?\u003c\/strong\u003e\u003cbr data-start=\"4184\" data-end=\"4187\"\u003eYes, the strong formula works even at low temperatures and protects the material at the same time.\u003c\/p\u003e\n\u003cp data-start=\"4300\" data-end=\"4467\"\u003e\u003cstrong data-start=\"4300\" data-end=\"4359\"\u003eHow can you tell when the cleaner has finished reacting?\u003c\/strong\u003e\u003cbr data-start=\"4359\" data-end=\"4362\"\u003eWhen the gel turns purple to black, the dirt is lifted and the clean is done.\u003c\/p\u003e\n\u003cp data-start=\"4469\" data-end=\"4640\"\u003e\u003cstrong data-start=\"4469\" data-end=\"4532\"\u003eIs the P21S \"High End\" Wheel Cleaner biodegradable?\u003c\/strong\u003e\u003cbr data-start=\"4532\" data-end=\"4535\"\u003eYes, the manufacturer states it's biodegradable and eco-friendly in use.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003csmall\u003eLast updated: 24.10.2025 — Author: Daniel (Detailing1)\u003c\/small\u003e\u003c\/p\u003e","brand":"Dr. Wack \"P21S\"","offers":[{"title":"1000 ml (Limited Edition 2025)","offer_id":56224509624655,"sku":"D1-DRW-1232","price":19.49,"currency_code":"EUR","in_stock":true},{"title":"750ml","offer_id":54707218743631,"sku":"D1-DRW-1230","price":19.49,"currency_code":"EUR","in_stock":true},{"title":"100ml","offer_id":54707218776399,"sku":"D1-DRW-1231","price":7.9,"currency_code":"EUR","in_stock":true},{"title":"2 liters","offer_id":54707218809167,"sku":"D1-DRW-1235","price":36.65,"currency_code":"EUR","in_stock":true},{"title":"5 liters","offer_id":54707218841935,"sku":"D1-DRW-1236","price":89.69,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/3272\/7375\/files\/1_14440ba1-9d55-4c10-a067-a497aa24ef78.png?v=1761250104"}],"url":"https:\/\/detailing1.lu\/en\/collections\/dr-wack-p21s-felgenreiniger.oembed","provider":"Detailing1","version":"1.0","type":"link"}