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Can anyone explain why my tires are two different colors after I clean them? They seem to have a different shade to them on the layer where the lettering is and are darker on top of the letters.
My hunch is that it's two different types of rubber. A tire can be made from several different types. One type may have more tensile strength to support the sidewalls whereas another type may be more resistant to abrasion and wear for tread use.
Originally posted by tguil The layer of rubber under the lighter rubber is white. Just rub the curb too many times and you will find this out.
Tom
Tom's spot on. Some tyre manufacturers use a layer of white rubber to create the white lettering, which your tyres have. This layer runs around the tyre to a height just beyond the lettering. Then they cover it with black rubber, only exposing the top of the letters.
This prevents the letters ever disappearing, as they're not just paint, but a deep layer of white rubber.
Trouble is, if the black topping rubber is too thin, it looks a little lighter, which is what your experiencing.
Paul Marmarinos Flawless Prestige Car Detailing "The trouble with the world is that everyone's about three drinks behind" - Humphrey Bogart
I have to agree with Tom also. I have seen many off road tires that were scuffed from rocks, causing the white rubber to actually show through. Sadly, not much you can about it.
It's not so much that the rubber is thinner and/or that there is in fact a layer of white rubber on the whole circumference of the tire; the rubber veneer that covers the white is a different compound. It has to be a different compound because "normal" sidewall would not stick to the white compound.
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