Originally Posted by SmartBastard
Is anyone running 285/35/18 on the rear with R18x10? Would it be too much?
Tire calculator is saying that 285 would match the original size even better ...
Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
255/40-18 4.0in 13.0in 26.0in 81.8in 775 0.0%
275/35-18 3.8in 12.8in 25.6in 80.4in 788 -1.7%
285/35-18 3.9in 12.9in 25.9in 81.2in 780 -0.7%
The width would be the concern. It could be made to work, but it would depend on the tire and what is done to the car. If it were a Nitto NT-05 or Hankook RS-3 there would be a high likely hood of an issue just bolted on since it's taller than a 275/35 which many have experience with, and it's wider as well (both height and width impact fender clearance as you move out). added negative camber or a rear fender roll would probably be enough, but there could also be clearance issues on the inside rear requiring a spacer, which in turn will be an issue on the fender side.
I would not recommend it to anyone afraid of doing all that is needed to make it work.