Replace tyre(s)?
 

Sorry, I'm sure this has been posted a thousand times, but the search is down.

I have a slow rear puncture that loses about 5 PSI per trip. Tyre's have done 8K miles but still have good tread.

Should I replace just the tyre or both rears?

Secondly, has anyone got anything bad to say about Black Circles?


Jonjo.

I would just patch it but if you replace it the other tire needs the same circumference usually requiring replacement as well.

Patch it. Cost 20 buck just about anywhere you go, or you could do it yourself for about 5 bones

^^ how would you do it yourself? You have to take the tire off the wheel to patch and plug properly and permenantly. The gas station plugs are not permanent.

OP: Try to have the tire fixed first. Go to a reputable tire or sevice shop that will plug and patch from the inside of the tire.

If you do not want to go that route or the tire is unfixable, you have to check tread depths. If there's a deviation for 2/32'' or more in tread depth from existing to new, change them both.

New tires usually come around 9/32'' to 10/32'' depending on type of tire and manufacturer. If your existing good tire is 7/32'' or 8/32'' (respectively) or better, you can just change 1.

The S2000 has some issues with pulling to one side on accel with different tire diameters that is WAY worse than other cars. I'd say about 4/32'' was the limit on most other cars.

If the damaged tire is unrepairable, I'd replace both rear tires - keeping the undamaged one as a spare. Replacing just one will put you in a cycle of uneven wear from side to side, resulting in pulling as B serious mentioned.
Additionally, tire compounds change as the tire wears, and as it heat cycles. Once you've put more than a few thousand miles on a tire (especially a performance tire), it's grip characteristics will change. These variances are not as noticeable with your typical family sedan with 50,000 mile touring tires, but can be quite drastic in a car such as S2000 with 8,000-15,000 mile performance tires.

I just take mine to the local tire shop here and have it fixed. It isnt expensive or anything. If you end up needing to replace one, they i would replace both. Good luck man.

-Ian

i changed a rear tire once. the car never drove straight until i replaced both rears. there was an on and off throttle pull.

Thanks for the feedback.

I would patch it, but I'm looking at a road trip around South of France in August and I don't fancy speeding around a Alpine road with a patched tire.

I'll check the tread as B Serious suggests, although a complete rear change looks likely.

Damn!!