SONAX PROFILINE FelgenReiniger Red Max wheel cleaner 5000ml

Pull off brake dust and mineral build-up the pro way — SONAX PROFILINE FelgenReiniger Red Max

What does the SONAX PROFILINE FelgenReiniger Red Max do? This strong acidic pro wheel cleaner dissolves brake dust, limescale and baked-on mineral build-up from alloy and steel wheels — even on stubborn, long-term grime and without heavy scrubbing.

In professional detailing shops and reconditioning outfits that clean heavily soiled wheels day in, day out, standard wheel cleaners hit their limit fast: baked-on brake dust made of iron particles, mineral limescale from hard water and polymerised road grime sit deep in the pores of the aluminium surface and won't come off fully with neutral or mild alkaline cleaners. The SONAX PROFILINE FelgenReiniger Red Max is the acidic maximum-strength formula for exactly this job: a powerful, acidic-pH blend built specifically for heavy daily pro use in large containers (5 litre, 25 litre, 200 litre) that reliably cuts through stubborn wheel contamination.

• Maximum acidic cleaning power for heavy-duty grime. The Red Max is the strongest option in the PROFILINE wheel cleaner range: with an acidic pH it dissolves mineral deposits (limescale, oxides) chemically through an acid-base reaction, while the powerful surfactant blend loosens brake dust and oil-grime mixtures and lifts them off the wheel surface. The result is a deep cleaning action that keeps mechanical scrubbing to a minimum and noticeably shortens the working time per vehicle.
• Built for heavy daily pro use in bulk containers. The Red Max comes in pro containers only — 5 litre, 25 litre and 200 litre — and is aimed at detailing shops, wash bays and fleet care outfits that clean lots of vehicles a day and need an economical, concentrated cleaner. Buying it in bulk means consistent product quality at a low price per litre and fewer stock top-ups.
• Effective against brake dust, limescale and road grime on aluminium and steel. Through braking, alloy wheels pick up iron particles from brake discs and pads that bake on and can't be removed without acidic chemistry. Limescale from hard water builds up especially on vehicles that get washed regularly but never fully dried. The Red Max targets both types of contamination and leaves a clean, even wheel surface.

Detailing1's tip from the shop: Always lay the Red Max down on cool wheels out of direct sun — on hot metal the dwell time drops sharply and the product can dry out before it works. Pre-rinse the wheel, spray or wipe the cleaner on, let it dwell for 2–5 minutes — don't let it dry — then rinse thoroughly. For heavily baked-on residue, back the dwell step up with a soft wheel brush to mechanically free the loosened residue from recesses and hubs. On unanodised aluminium surfaces, keep an eye on the dwell time — too long a contact can dull the aluminium. After the acidic clean we recommend a rinse step with clean water and, if needed, a finishing treatment with the SONAX PROFILINE FelgenReiniger as a maintenance product for regular use.

Acid chemistry in a wheel cleaner — how the Red Max dissolves mineral build-up and brake dust

The working principle of the SONAX PROFILINE FelgenReiniger Red Max is based on a combined acidic and surfactant-active formula: the acidic component attacks mineral compounds by breaking down the crystalline structure of limescale and oxide deposits — calcium and magnesium carbonate (limescale) react with the acid and turn into water-soluble salts that rinse off easily. Aluminium oxide deposits (corrosion products on alloy wheels) are likewise loosened by the acid reaction.

Iron particles from brake dust are, chemically speaking, iron oxide (rust) or metallic iron that has baked into the surface structure of the wheel. Acids dissolve iron compounds through a different reaction: metallic iron and iron oxides react with strong acids, releasing iron salts that are water-soluble and get carried off during rinsing. The combined action of acid and surfactants makes sure the greasy phase of the brake dust residue (brake caliper oil, road grime) is loosened and lifted off the surface at the same time — a purely acidic formula without surfactants would only dissolve the mineral component and leave the organic dirt behind.

The "Red Max" name points to the maximum concentration within the PROFILINE wheel cleaner line: compared to the regular SONAX PROFILINE FelgenReiniger (positioned as a milder maintenance solution), the Red Max is built for situations where normal cleaners are out of their depth — heavily soiled wheels after long cleaning intervals, vehicles with mineral-rich water residue, or commercial tyre service outfits cleaning lots of wheels a day.

The formulation is dialled in for use on aluminium and steel wheels. Aluminium handles acids well in a controlled concentration and with limited dwell time — too long a dwell can strip the natural oxide protection layer of the aluminium too far, leading to dulling or an uneven surface. This effect is stronger on smooth, unpainted wheels than on powder-coated or painted wheels, which are protected by the coating. For pro use that means: keep an eye on the dwell time, don't let it dry, rinse off fully.

Using the FelgenReiniger Red Max properly — dosing, dwell time and safety

Using the acidic pro wheel cleaner takes a bit of prep and care to get the best results and avoid material damage. Step 1 — prep: move the vehicle to an area where the wheels aren't in direct sunlight. Pre-rinse the wheels with clean water to get rid of loose dirt and loose particles that would otherwise act like scratching abrasives during the cleaning process. Check the wheel temperature: the wheels have to be cool (under 40 °C), which is a regular problem on freshly driven vehicles — hot wheels let the cleaner dry out too fast.

Step 2 — application: spray the Red Max evenly onto all wheel surfaces with a spray bottle — face, spokes, hub centre and barrel. With 5-litre containers a separate spray bottle filled from the container is the way to go, to keep dosing controlled. The dwell time is typically 2–5 minutes, depending on how dirty the wheel is. During the dwell the cleaner should stay visibly wet — if it dries, re-wet it right away, since dried-on acidic cleaner is harder to rinse and can attack the wheel surface.

Step 3 — mechanical help and rinsing: for heavily baked-on brake dust or hardened limescale, use a soft wheel brush to mechanically free the loosened residue in recesses, around bolt holes and between spokes. Then rinse thoroughly with clean water — fully removing all acid residue matters, since even small amounts of acid left dwelling on aluminium can trigger corrosion or dulling. With strongly acidic waste water, follow the local waste water regulations — professional wash bays have neutralisation systems for acidic effluent.

Personal protective equipment: when working with concentrated acidic wheel cleaner, protective gloves and, for intensive use, safety goggles are a good idea. That goes especially for the 25-litre and 200-litre containers, where you're handling larger quantities. For automatic cleaning machines and water systems, check compatibility with the material of the system before use.

Where the Red Max is used — wheel types and levels of grime

The SONAX PROFILINE FelgenReiniger Red Max suits a broad range of wheel types and grime scenarios. Alloy wheels (cast and forged), whether painted, polished or powder-coated, respond well to the acidic clean — but on polished or untreated aluminium wheels (bare aluminium) the dwell time should be capped at 3 minutes max, so you don't risk dulling the polished surfaces. Powder-coated and painted wheels handle the acidic formula well, since the protective layer isolates the aluminium from direct acid contact.

Steel wheels (winter wheels, commercial vehicle wheels) can be cleaned with the Red Max too — here the acidic formula is less critical, since steel is less reactive to acids than aluminium. On steel wheels with rust on the inner face, the Red Max loosens the surface rust, which becomes visible (orange residue when rinsing). For the outer face of chrome wheels we recommend keeping the dwell time to 1–2 minutes and rinsing especially thoroughly, since chrome can go dull under long acid contact.

In commercial use the Red Max is especially efficient for wash bays, tyre service outfits and fleet care businesses that clean lots of vehicles a day. The bulk availability (25 litre and 200 litre) lets it slot fully into existing cleaning workflows. A common case is cleaning van fleets and truck wheels, which get especially heavily contaminated with brake dust from their heavy brake systems and have long cleaning intervals. The SONAX FelgenBeast offers a colour-indicating formula as a complementary option, changing colour when iron particles react — for outfits that value a visual readout of the cleaning action.

Red Max in the product comparison — acidic cleaning vs. universal wheel cleaners

The SONAX wheel cleaner range has different products for different requirement profiles. The regular SONAX PROFILINE FelgenReiniger is designed as a milder, broadly usable maintenance solution for regular use on normal wheel grime — lower pH, gentler on sensitive wheel surfaces, suitable as a weekly cleaner. The Red Max, on the other hand, is positioned for intensive use on heavy grime or after long cleaning intervals: more cleaning power, shorter working time on heavy brake dust.

Compared to non-acidic, purely alkaline wheel cleaners, the Red Max shows superior performance on mineral deposits (limescale, oxides) — alkaline cleaners are good for organic grime (oils, greases, silicones) but regularly fail on limescale and baked-on iron-oxide brake dust. Conversely, acidic cleaners are less effective against oil and grease grime, which a surfactant-based alkaline formula handles more efficiently. The Red Max combines acid and surfactant technology to tackle both types of grime at once — that makes it an all-rounder for heavily soiled wheels carrying both mineral and organic residue.

Against DIY solutions (diluted citric acid, household sanitary cleaners), the Red Max as a professional product has a clear edge: the formulation is optimised for vehicle wheels, contains the right surfactants for brake-dust removal, and the concentration is set so it works effectively without damaging wheel material at a short dwell time. Household sanitary cleaners often contain acids that are too aggressive or the wrong surfactants for wheel use and can do permanent damage to wheel coatings or aluminium material when used wrong.

Buy the SONAX PROFILINE FelgenReiniger Red Max — containers and usage recommendation

The SONAX PROFILINE FelgenReiniger Red Max comes only in professional bulk containers: 5 litre for smaller outfits and frequent single users, 25 litre for mid-size detailing shops and wash bays, plus 200 litre for industrial customers and large fleet care operations. The price scaling by container size is significant — the 200-litre container offers a much lower price per litre than the 5-litre one and makes the Red Max especially economical for high-volume outfits.

For small to mid-size detailing shops doing 5–20 vehicles a day, the 5-litre container is the ideal entry point: you can use it straight as a working volume and the demand is easy to gauge before deciding on the 25-litre container. Per set of wheels you typically need 20–50 ml depending on the level of grime and the wheel size — so the 5-litre container is good for 100–250 vehicle jobs, which keeps stock manageable even for smaller outfits.

To sum up, the Red Max is the right product for any wheel cleaning job where mild wheel cleaners fall short: heavily baked-on brake dust after long cleaning intervals, hard-limescale mineral build-up, and commercial cleaning demands with high throughput. For outfits looking for a full wheel care concept, we recommend pairing the Red Max for the intensive deep clean with the regular PROFILINE FelgenReiniger or the SONAX FelgenBeast for ongoing maintenance — a two-step split that optimises both cleaning quality and economics.