MyZ4U2C

Im about to get some new rear tires for my Z. Currently i have the stock 245/40/18's on the back. Can i put 275/35/18's on the stock rim? I heard i could and that this is the correct size to not throw off my speedometer. Can anyone verify this? Thanks!

Russ@Z1

iTrader: (65)

There are various styles of calculators available online that'll help you figure everything out on your setup. That's what I did when I widened my rear rims from 8" wide to 9.5".

http://ejelta.com/tiresize/


That's one of the available tire size calculators that will tell you as far as sizing differences as well as the difference in mileage variances.


Hope that helps.

davidv

iTrader: (2)

Click here for more than you ever wanted to know about wheels and tires for the 350Z
http://www.350zmotoring.com/modules....ex&name=Wheels

KY350

I didn't know that Nissan started using 245/40R18 on the rears. I always thought that they used 245/45R18 rears. If this is the case, you would want to get your original sizes correct before using a calculator to determine if wider wheels would fit.
Also, you need to see if a 275 tire would fit on the rim width that you have. If you have an 8" rim, my guess would be no - you can get a 255 on this width rim and some people may have stretch a 265 on an 8" rim also.
Despite this, I don't like the stretched look that is becoming fashionable these days, where the rim protrudes further than the tire. I can see the curb rash now. Also, If you go for a stretch look, you'd want to get a brand of tire with stiff sidewalls, if you plan on very hard cornering.