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We came across this product a few months ago and it is absolutely amazing. We call it god's gift to STI owners: P21S Wheel Cleaner. Brake dust is a thing of the past. Just spray it on those dirty BBS wheels before you wet them down, let the liquid or gel sit, and use high pressure water to rinse it off. Your wheels will look even better than they did when you picked them up from the dealership. This wheel cleaner is not abrasive and works very well. We got ours from Performanceproducts.com. Try a search on google for other suppliers but they guarantee the lowest price.

We recommend getting the 1 gallon or 1 liter refill because this stuff is not cheap (but neither are your BBS wheels) and it is cheaper in bulk. The small 16.9 fluid oz bottle with 500mL will last a good 1-3 months, which depends on how often you drive your car and wheels require washing. More importantly, if you are busy like us, then you may not get to wash your car as often as you like. In the past, you might worry that the caked on brake dust will damage the wheels if you did not wash your car. With this product, it takes less than fifteen minutes in the morning or when you return home to clean it off so no harm is caused to your precious wheels. Sorry this sounds like an ad but that is how great this stuff is. And no we are not affiliated with any vendor that sells this product or the maker itself.

We just like to pass on those invaluable tips. Oh, and if you did not already know, Bacardi and Kettle One are the STI's other best friends (the more expensive ones) when your intercooler is a little to hot and it needs to be cooled down quickly. :)

There are two kinds the liquid and the gel. The liquid works very well, but we have been told that the gel is just a high concentrate of the liquid. So we dilute the 1 litre refill 1 part P21S and 1 part water and that seems to work very well. The gel works by leaving it on for a prolonged period of time. We have included pictures below with the instruction label. We hope this was useful.
 

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Anyone with turbo-back exhaust only

Another very effective wheel cleaning solution when the dust is caked on is a sodium hydroxide oven cleaner. The sodium hydroxide will not damage most coated wheel finishes, but as always, spot test first!
 

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I have a question about this (and any other wheel cleaner): Obviously they all advertise as safe for the wheels, but what about the brakes? It's difficult to spray these wheels w/o getting it all over the brakes. I think that we can therefore assume some will get on the pads too. Is this going to ruin the brake pads or any other part of the brakes? This question goes for any cleaner.

Thanks.
 

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Discussion Starter #5
There has been no noticeable negative impact on the pads. Performance products sells mostly porsche items and since there are brembos on porsches, this cleaner cannot damage your pads. Ok, that reasoning is flawed, but in any case, the wheel cleaner should not affect your pads in any way. If you are concerned call Performance products and fire your questions at them. When we called, the person we spoke to was very knowledgeable. Let us know what you hear.
 

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Did you mix yourself a drink of rum and vodka while doing this? I have to question your product review :wink:
 

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In case anyone seriously thinks spraying hard booze on their intercooler is a good idea: it isn't. It's flammable. EJ257 flambe...bad.
 

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Discussion Starter #8
A significantly diluted mixture of rubbing alcohol (or any alcohol) and distilled water should not cause a problem.
 

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Soft Paint

I just went ahead and installed alchohol injection, done for like 3 months and the car runs great! I deffenitly recommend alchohol in this instance.(car consumption)
 

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ok, so i put on my winter wheels and took off the BBSs for storage. I used a brush and water to wash most of the brake dust off, but on the inside, it seems that there are lots and lots of black spots. Some of them came off with some scrubbing, but not much. I'm guessing that this is tar or road oil or something. Will this stuff work on that? or what would you recommend for such cases?
 

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For tar, use a solvent like a tar remover made for auto finishes, Goo Gone, mineral spirits, etc. And test in an inconspicuous spot first.
 

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anyone tried Rejex yet? it's not wheel cleaner, but it's like a wax but seems to work better and longer... should be great for keeping brake dust off the wheel and easy to clean, even without this P21S stuff. I just put it on my Accord (good for wheels, paint and glass!). If I'm pleased with it, it will go on the STi as well.

http://www.corrosionx.com/rejex.html
 

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I just use Meguaire's rim cleaner and a power washer and it gets them dealership-clean every time. For regular dry brake dust it's more about the water pressure than anything else , since the rims are already treated.
 

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Yeah power washer works great unfortunately my water supply outside is frozen so my Gold Tarmac II's are basically Black now!
 

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I would like to add that Wheel Wax is an amazing product as well. I followed your recommendation and also bought the p21 gel. Thanks for the useful hints, I have never been able to clean my wheels so nicely, and the wax helps keep them clean all week. At which time a wheel wipe and a spray down has them good as new.

Thanks again,

Jason
 

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I purchased the P21S wheel cleaner last week and gave it a try this weekend and I honestly wasn't that impressed. The stuff didn't seem to work any better than some of the better of the off the shelf less expensive wheel cleaners I have tried.

I without a doubt wouldn't say that stuff sucked but I just didn't see any reason to justify the price.
 

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I used P21S for a while and could not justify the price going forward for the cleaning it did. It works well on clean wheels but does not do that well on dirty wheels. When my car was new it was great for the first three weeks.

I now use GE Teflon wheel cleaner. If you wash your wheels really well, dry them, then spray this stuff on, it works probably better than P21S. If I do this on Saturday and can just spray the brake dust off with water on Wednesday. The wheels shine too. The unfortunate thing is that you have to spray them off on Wednesday to keep the dust from accumulating.
 

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NE 1 have a game system installed in there car?

The reason P21S is so expensive is it's PH neutral. For the Chemistry Challenged that means it's neither acid or a caustic solution. If you read the labels on these cheaper wheel cleaners you will see that they contain one or the other. Gentlemen these wheels are made of aluminum and they don't take kindly to one or the other. Either one will eventually eat into the aluminum. I drive fast and I don't need to be worrying about a potential weakening of the rims. As far I know Porsche recommends P21S and for the reasons stated above.
Drive it like you stole it!!
 

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The reason P21S is so expensive is it's PH neutral. For the Chemistry Challenged that means it's neither acid or a caustic solution. If you read the labels on these cheaper wheel cleaners you will see that they contain one or the other. Gentlemen these wheels are made of aluminum and they don't take kindly to one or the other. Either one will eventually eat into the aluminum. I drive fast and I don't need to be worrying about a potential weakening of the rims. As far I know Porsche recommends P21S and for the reasons stated above.
Drive it like you stole it!!
 

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WHAT??? Sti "Special oil Filter"???

Our wheels are painted, so you're not spraying wheel cleaner on exposed aluminum.
 
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