Do you ceramic coat both sides of the wheel?
Quick answer: As standard we coat the visible face of the wheel. We can also coat the inner barrel, but only if the wheels come off the car, which takes longer and costs more. We leave hubs, mating faces and braking surfaces alone. Whether the barrel is worth coating depends entirely on how you use and clean the car.
This is one of those questions where the honest answer is "it depends", and the thing it depends on is you. Not the wheel, not the coating, not the car. You.
So before we talk about chemistry and labour, let's talk about who's asking.
The wheel-off enthusiast versus the rest of us
Yes, some people remove all four wheels when they clean their car. Hard to believe, but a few enthusiasts genuinely do, every couple of weeks, with a dedicated brush set and a stool to sit on. Good luck to them. Our average customer is more average than that. They don't take the car to shows, they're not chasing concourse condition, and they're not paying someone to pull the wheels off every fortnight to clean the backs.
That holds even at the top end. Plenty of our customers drive Aston Martins, Maseratis and Porsches, and almost none of them want the inside of the wheel detailed. They want the car protected so it looks newer for longer and is easier to keep clean. The face is what they see; the face is what they care about.
For that customer, a ceramic coating on the back of the wheel is a coating they'll never see the benefit of. Unless you're very diligent and getting back there often, brake dust will collect regardless. A coating makes it release more easily, but only if someone is actually washing it. A coated surface that's never cleaned still goes black; it just goes black slightly more reluctantly.
Why we coat the face as standard
The outer face is what you look at every day, and it's where appearance matters most. It's also the part that benefits most obviously from coating. Once a wheel face is coated, brake dust releases during a normal wash instead of needing strong fallout removers and a stiff brush every time. That's a real, daily, you-can-feel-it difference. The wheel stays clearer between washes and cleaning takes minutes instead of a wrestling match.
The face is also the easy surface to prepare well. It's accessible, you can see every inch of it, and you can decontaminate and machine it properly with the wheel still on the car in many cases. Good prep is most of what makes a coating last, and the face is where good prep is achievable.
The barrel lives in a worse neighbourhood
The inner barrel sits in a far harsher environment than the face. It catches the densest concentration of brake dust, it cycles through real heat every time you brake, and it's coated in road grime and moisture that the face is partly shielded from. It's also the surface that almost never gets cleaned properly during a routine wash, because you simply can't reach it with the wheel on.
So the barrel is fighting harder conditions with less attention. That's the core of why it behaves differently from the face, and why a coating there is a different proposition entirely. The three things stacked against it:
- Far heavier brake dust accumulation than the face sees
- Repeated heat cycling from the brakes inches away
- Genuinely limited access for safe, thorough cleaning
What coating the barrel actually involves
This is where people underestimate the job. Coating the barrel properly isn't a case of dabbing a bit more product round the back. The wheels have to come off the car. Each one then needs full decontamination, the bonded brake dust and tar lifted, the surface cleaned back to bare paintwork, and the same careful preparation we'd give any surface we're about to coat. Then it's coated, left to cure, and refitted with the wheels balanced if they were off the hub.
The cost isn't the product; coating is cheap by the millilitre. The cost is the time and the access. Four wheels off, four barrels prepped to a coating standard, cure time, refit. That's most of a day's work on its own, and it's why it sits as a paid extra rather than something we throw in.
- Extra decontamination and prep, not just extra coating
- Labour and wheel-off access, which is where the real cost lives
- A diminishing visual return for most owners, who never see the barrel
The matte-black alternative
Here's the option most people don't know exists, and it's often the smarter call. For customers genuinely bothered by black backs showing through the spokes, we've had our wheel company paint that area matte black. Brake dust is black; a matte-black barrel hides it completely. You get the clean look you wanted through the spokes without signing up for a lifetime of scrubbing behind them.
It's the kind of fix that sounds like a compromise and turns out to be the better answer. A coated silver barrel still needs regular detailed cleaning to stay looking silver. A matte-black barrel looks the same dirty as it does clean. For the spoke-gap appearance most people are actually chasing, that solves the real problem rather than the assumed one.
While we're back there: callipers
The same logic covers brake callipers, which we don't coat unless you ask. We can and regularly do, on cars where the callipers are a feature, and we've arranged for callipers to be repainted in bright custom colours more than once. But on most cars the callipers aren't meant to draw the eye, and most owners aren't fussed about them. If yours are a feature, say so and we'll treat them properly; if they're not, they're better left alone.
The trade-off nobody mentions until later
Here's the honest catch with the standard face-only approach. In a few years, if you decide to sell the car or give it a refresh to keep it longer, the wheels may look tired. The odds you've gone that long without scuffing a rim or picking up a bit of corrosion are slim. Wheel refurbishment has come down in price a lot over recent years, though, so a tidy-up at that point is far less painful than it used to be.
You're weighing that occasional refurb against the alternative: getting behind the spokes with a wheel brush every couple of weeks for years to keep silver barrels looking silver. Put like that, most people would rather pay for a refurb once than scrub forever. That's the real trade, and it's why we steer most customers towards face-only plus matte-black backs if appearance matters to them.
Wheel corrosion, and whether coating helps
Alloy wheels often develop little blisters of corrosion. It can start anywhere the paintwork is broken, a stone chip for instance, but very often it begins where the paint is thinnest: around the bolt holes, or creeping in from the back of the wheel. When wheels are painted at the factory the backs get far less attention than the faces, and even on dipped wheels the edge where the face meets the barrel is sharp, so the paint there can be wafer-thin.
Would a coating help? It might, but it's far from guaranteed. We put a lot of work into preparing a surface before we coat it, and the back of a wheel is rarely an ideal surface to start from; it's often already pitted, and it takes a beating every mile. A coating laid over a surface that's already compromised is buying time at best, not a cure. If corrosion has started, the honest fix is refurbishment, not a coating papered over the top.
Two things a barrel coating won't do
Worth clearing up, because they come up often. Coating the inside of a wheel does not reduce how much brake dust your car makes; that's down to your pads and how you drive, not the wheel's surface. And it does not make the wheel maintenance-free. It makes cleaning easier when you do it. It never makes cleaning optional.
So, both sides or not?
Coating both sides of a wheel isn't automatically better, and it isn't automatically a waste. It earns its place on performance cars that throw a lot of brake dust, on show cars that barely move, and for owners who genuinely enjoy the upkeep and want the easiest possible long-term maintenance. For everyone else, the face gets the coating, the backs get left silver or painted matte black, and the money saved sits ready for a refurb down the line if the wheels ever need it.
Tell us how you actually use and clean the car and we'll point you at the right answer for it. That conversation is worth more than any default we could write down here.