Bilt Hamber Auto-Wheel | Non-Acid Reactive Wheel Cleaner

The problem with most wheel cleaners

Acid wheel cleaners work because they attack. So do caustic ones — just from the other end of the scale. Both will clean a wheel, and both will, over enough cycles, etch the lacquer, dull the machined face and creep into the pores of a diamond-cut rim. Bilt Hamber's argument is that you don't need either, and their SDS backs it up.

The chemistry

Auto-Wheel runs on sodium mercaptoacetate (sodium thioglycolate) at 10–30%, CAS 367-51-1 — the same thiol active as Korrosol, paired with a C12-14 ether sulfate surfactant for degreasing. Bilt Hamber's safety data sheet places it at pH 5.5–7.0. That is the entire point: it is neither acid nor alkali, and it still outperforms products that are.

It works by chelation. The thiol coordinates bonded iron — brake dust, rail dust, ferrous fallout — and renders it water-soluble, so it rinses off instead of remaining welded to your finish. The clear-to-purple bleed you see is the chelation running. It is a progress bar, not a gimmick.

Korrosol or Auto-Wheel?

Same active, different rheology. Bilt Hamber formulate Korrosol to spread across paint, and Auto-Wheel to cling to the dirtier, vertical, awkward surfaces of a wheel. Use each for the job it was built for.

How to use it

Cool wheels only. Test the rear face of a wheel first. Spray liberally over the whole wheel, covering the edges and barrel. Give it 1–5 minutes — temperature dependent — and watch for the colour change. When the purple stops deepening, agitate very dirty wheels with a soft brush, then pressure wash off. Ready to use, no dilution.

Keep it away from chrome-look plastic centres and chrome films. The conductive film can be chelated and dulled.

Handle it properly

The thiol active is a skin sensitiser. Bilt Hamber classify Auto-Wheel H317, H302 and H319. Nitrile gloves, eye protection, don't breathe the mist. Non-acid does not mean inert.

Safety Data Sheet (Australia)
Download the Bilt Hamber Auto-Wheel SDS (PDF)

Bilt Hamber Auto-Wheel — frequently asked questions

Is Auto-Wheel acid-free?

Yes. Bilt Hamber’s SDS places it at pH 5.5–7.0, neither acid nor alkali. The cleaning comes from a thiol active (sodium mercaptoacetate) that chelates bonded iron, not from attacking the wheel finish.

Is Auto-Wheel safe on diamond-cut and painted wheels?

That is the argument for it. Acid and caustic wheel cleaners etch lacquer and dull machined faces over repeated use; Auto-Wheel does neither because it is pH-neutral to mildly acidic. Test the rear face of a wheel first, keep it off chrome-look plastic centres and chrome films, and use it on cool wheels only.

Korrosol or Auto-Wheel?

Same active, different rheology. Korrosol is formulated to spread across paint; Auto-Wheel is formulated to cling to the vertical, awkward surfaces of a wheel. Use each for the job it was built for.

How long do I leave Auto-Wheel on?

One to five minutes depending on temperature. Watch the colour: when the purple stops deepening, agitate a very dirty wheel with a soft brush and pressure wash off. It is ready to use, no dilution.

Where can I buy Bilt Hamber Auto-Wheel in Australia?

Here. Alpha Details in Heidelberg West, Melbourne is an authorised Bilt Hamber stockist carrying the full range in 1L and 5L, with Australia-wide shipping and free delivery over A$95. See the Bilt Hamber collection.