vnguyen37x

What's going on guys. This is my first post, so I apologize in advance if it is not in the correct section. I just bought my 2013 G37x two weeks ago and I just put 20 inch rims on the car. They are currently wrapped in 245/35/20 tires. The car is stock height and I don't plan on lowering it. My question is, will 245/40/20 fit on my car without any problems such as rubbing. I knew that going from 17 to 20s was going to be a rougher ride, will going from the 245/35/20 to the 245/40/20 help the improve the ride and reduce the noise? Thank you for your help!

blnewt

iTrader: (13)

First off, welcome to the site & congrats on your new G
The good news is you bought the perfect 20" tire size for your car, the bad news is you have the rougher ride. You must keep your outside diameter as close to stock as possible, particularly w/ an AWD. The 245/35/20 is only .03% of your stock diameter which is what you need. The 245/40/20 is 3.5% off which will cause your speedometer, ABS, and Traction control sensors to be out of range along w/ issues w/ AWD. Here's a calculator that you can mess with to see various tire combos. Be glad you got the tires you did, just get a seat pad, lol
https://www.myg37.com/forums/tire_rim_calculator.php

vnguyen37x

Nice, I feel better now, I don't mind the ride so much, so get use to it quickly since I changed to 20s a week after buying the car. Thank you for the help!