My car's tyres have developed a ring of lighter colour on the outer edges?

Question

Originally I had 14" inch steel wheels on.

Last year I bought 15" alloys and had them balanced and put on.

I had new tyres put on 2 tyres about 3 months ago.

Now I can see a sort of thin dirty edge has developed on the very outside of all 4 tyres.

Is it something to be concerned about?? Do a lot of cars have this issue cause I was looking at cars in supermarket car park and couldn't see any with dirty edge tyres. Replacement tyres are expensive !!

All parts of the tyres are fully black except for this sort of dirty edge.. which I'm hoping isn't a sign of excess wear... which is a full circle on outer edge of all the tyres. It can't be washed off or anything like that. The tyre has changed colour there.

I've got a tyre pressure guage and keep my tyres inflated at recommended psi/bar as according to the tyre size for my car (1.9 bar or 28psi).

Also I had my tracking recalibrated last week cause there was a slight pull to the left - but I can't see that having caused it.

Thank you for your insights and suggestions.

Just for the record.. my tyres/tires are all Goodyear NCT5s and they aren't remoulds.. the last 2 I bought directly from a top automotive tyre company.

http://eu.goodyear.com/home_en/tires/repository/EagleNCT5/index.jsp

The ring of lighter colour is on outside edges of all my tyres... visible as you look at the car... outside edge and not inside edge.

However thanks for answers.. given me something to consider.

Answer 1

Hi,if your tires are now, even slightly oversized (because of the changing), your likely scrapping the plastice interior walls of the fender. Check them.

Answer 2

You mention that you increased the wheel size from 14" to 15" this could be causing the tire to rub the inside of your fenders, it may only be doing it when you hit a bump. If you did end up with retreads as Amma mentioned you have a major problem because it is illegal to retread passenger car tires in the U.S. (assuming that is where you live). Take Your vehicle back to the person who put your tires on and have them examine the problem. Without actually seeing the tires that is the best advice I can give, unless you frequently park on both sides of a one way street and are rubbing the curb when you park. Good luck finding a solution.

Answer 3

If the markings are one the broadest part of the tyre, then it could well be that you are 'kerbing' (ie tyres rubbing along kerb when parking etc.). If, on the other hand, the marking is nearer the tread pattern, then it could mean that the tyres are of a low quality remould, which aren't actually illegal here in the U.K., but obviously it would be better if you used a well known brand of remould, and use them only on rear wheels, with new tyres on the front.

Answer 4

Its a possibility that you ended up with retreads, if so then it may be the tread is separating from the original tire threads. Take it to some one you can depend on to tell you the truth, don't let them sell you new ones, may be get second opinion. If they did return them to get correct tires. Report them to Consumer Affairs or Better Business Bureau. You do need to put this in writting, so they can investigate, tell the tire company what you plan on doing, they don't like people to send in letters about giving bad business. You can call, they are in the phone book under same name's.