So I Need New Tires On My R34 Wheels. Quick Question.

[Sayajin]

Okay guys. Well unfortunately the other day I got a nail in the rear driver tire on my car and it cant be plugged.

Currently I am running Bridgestone Potenza GIII 245/40/ZR18 all around. Only problem is that they never brought the GIII to the USA. So I have to go with a different tire.

The Bridgestone Potenza RE750 was recommended to me as a good replacement. The issue is that the tires on my car now are damn near brand new, so I dont want to buy 4 new tires. However since they dont make the exact model I have over here in the US, I really feel more comfortable changing out both rear ones instead of just one. Since the tread pattern on the tires will be different. I do want to at least keep all 4 tires a similar brand and type however. Which is why I was going to stay with the Potenzas.

Anyway, I figure since I am ordering 2 new rear tires, I might as well get something as wide as possible. I do a LOT of racing and any added traction would be great. As I said above, I am currently running 245/40/ZR18 tires on R34 V-Spec Wheels all around. I have 2 main concerns however.

1. I have read before that due to the ATTESSA system you normally want to keep your wheels the same size all around because if you dont you get bad readings. However, are they referring to actual height or width? I mean do I need to just keep 245/40 all around for now? Or can I run 245/40 on the front and then run 265/35 on the rears?

2. From what I have read, it appears that a 265/35 tire is really the widest size you can run on R34 wheels without any modifications. Is this indeed correct? If not, what is the widest size you CAN run without modification?

Thanks a lot for the help guys. It is greatly appreciated. I really need to get these tires ordered today so I can get my baby back up and running. But before I did I wanted to confirm a few things to maintain optimal performance. Thanks.

-Sayajin

[salad]

Here's an option that you may think about, not saying it's the best idea, but it's definitely the cheapest.

Take it to another tyre shop and ask them to put a plug in it and tell them that it is for track only use. They should still be alright with doing it if it's track only use. And then just drive around on it normally. If as you've said it's just a nail, then it should be fine. I've done this with plenty of tyres and it has lasted ages.

Another option, which would be better is to get a major repair done on the tyre where they vulcanize a patch into the sidewall. If the tyre is brand new, the guy should've mentioned this. Well my store sends off a lot of tyres for major repairs, so once again, I'm makin a couple of assumptions

[Beer Baron]

depends what type of racing you are doing. if it's circuit work then neither of those tyres are suited at all. if your talking drag, then you'd be best off buying another set of rims and put some drag tyres on.

you need to keep the rolling diameter the same all 'round. there is a fair bit of difference in diameter from 245/40 to 265/35 (98 vs 92 sidewall) so not a good idea.

[Sayajin]

Well the reason it couldnt be repaired it seems is not only the nail. There also appears to be a bubble in the side of the tire. I was told that if they patched the tire it would almost DEFINETLY blow because of the bubble.

-Sayajin