Brake dust is the toughest dirt on a vehicle. It bakes onto the rims and often needs more than a car wash to shift. Wheel cleaners come in two broad types, acid and non-acid. Here's how they differ, which finishes need care, and how to clean rims and mag wheels without damaging them.
The quick answer
| Type | Good at | Watch out for |
|---|---|---|
| Acid wheel cleaner | Fast on heavy, baked-on brake dust | Can damage some wheel and alloy finishes, and needs careful handling |
| Non-acid (alkaline) wheel cleaner, like Red Bite | Brake dust, road grime and dirt, mixed to suit the job | Not for polished, anodised, uncoated or damaged finishes |
For regular cleaning of painted and clear-coated wheels, a non-acid wheel cleaner is the everyday option.
What is an acid wheel cleaner?
Acid wheel cleaners, sometimes sold as wheel acid, use acid to dissolve brake dust and road film quickly. The trade-off is that acid can etch or stain some wheel and alloy finishes if it's too strong or left to dwell, and it needs gloves, eye protection and careful handling. Whatever you use, follow its label and Safety Data Sheet.
What is a non-acid wheel cleaner?
A non-acid wheel cleaner does the job without an acid-based formula. Red Bite is an alkaline wheel cleaner with no acid in it, blended in Sydney. It breaks down brake dust, road grime and dirt, and it's sold as a concentrate, so you use it neat for severe brake dust or dilute it for regular cleaning.
| Job | Red Bite dilution |
|---|---|
| Severe brake dust and contamination | Neat, or up to 1:5 |
| Heavy cleaning, tyres and truck wheels | 1:5 to 1:10 |
| General wheel cleaning | 1:10 to 1:20 |
| Light maintenance | 1:20 to 1:40 |
Which wheel finishes need care?
- Painted and clear-coated alloy and mag wheels. Most alloy and mag wheels have one of these finishes. Red Bite suits compatible wheels when used as directed.
- Polished, anodised or uncoated aluminium. Red Bite is not for these finishes.
- Damaged finishes. Red Bite is not for damaged finishes either.
Not sure what's on your wheels? Test on a small hidden area first, especially when using it neat.
How to clean rims and mag wheels
- Work on cool wheels, out of direct sun.
- Rinse off the loose dirt.
- Spray on Red Bite, mixed to suit how dirty the wheels are, from a bottle with a chemical resistant trigger.
- Agitate with a detailing brush where the brake dust is bedded in.
- Rinse thoroughly, and don't let it dry.
- Once the tyres are dry, dress them with tyre shine.
Work one wheel at a time so the cleaner never dries on the rim.
Truck wheels
Mix Red Bite at 1:5 to 1:10 for truck wheels and tyres. It's not for polished, anodised or uncoated finishes, so check what's on the wheels first. For the rest of the truck, see how to set up a truck wash bay.
Best wheel cleaner: what to look for
- Matched to your finish. Check what your wheels are before you buy.
- Adjustable strength. A concentrate lets you go strong for baked-on brake dust and weaker for a weekly clean.
- Cost per wash. Red Bite 20L works out at about 15c a set of wheels.
- Handling. A non-acid formula avoids the extra care that acid needs.
Common questions
Is acid wheel cleaner safe?
It can be used safely by following its label and Safety Data Sheet, but acid can damage some wheel finishes and needs careful handling. For regular cleaning of painted and clear-coated wheels, a non-acid cleaner like Red Bite is the everyday option.
Does Red Bite contain acid?
No. It's an alkaline wheel cleaner with no acid in it.
Can I use Red Bite on alloy wheels?
On compatible painted or clear-coated alloys, yes, when used as directed. It's not for polished, anodised, uncoated or damaged finishes. Test first if you're unsure.
How do you get baked-on brake dust off rims?
Use Red Bite neat or up to 1:5 on a cool wheel, agitate with a brush, and rinse thoroughly before it dries.
Does wheel cleaner work on tyres?
Red Bite does. Use 1:5 to 1:10 on tyres and truck wheels.
How far does a 20L drum go?
Roughly 550 to 1,000 sets of wheels at general wheel-cleaning dilution, about 15c a set. See cost per wash by pack size.