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Discussion Starter · #1 ·
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
 

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You should really keep the same size of tyres on all the wheels, because of the attessa 4wd, but also because the car would be less good to drive.

If you want to change size you can use 265/35 18 on the standard R34 GTR wheels, that's the best compromise and the maximum size that will fit correctly on the standard wheels, and even if you use larger rims, all the good tuners usually fit 265/35 18.
 

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Discussion Starter · #3 ·
Thanks man. I am really leaning towards the 265/35/18 myself.

I guess my main concern was making sure that I would be okay running a slightly larger tire in the rear for about 4-6mo before I change out the front ones?


-Sayajin
 

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No it would be better to change all 4 tyres at the same time or just get the 245 rear tyres, also if you use new 265 just at the rear the wheel diameter will probably be slightly different.
 
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