On my 55 I am running 225/40r18 in the front and 255/35r18 in the rear. I believe the rears are slightly off like posted above 1.3% or something like that and I don't have any issues with ECT. As for warranty concerns Dan will have to answer on that one.
For the guy asking about the 265 tire. If I remember right the AMG rears are 18x8.5. I believe a 8.5" is outside of most manufacturers recommended safe rim width for a 265. You should be able to use a 255 without any problems, but to be honest the 245 will give you a crisper feel as a 255 will have a slightly bulged/protruded sidewall. |