I have the 15x10's in the rear and I use a 275/50/15 MT ET street radial. They sound narrow for a 10 inch rim, but they still bulge a bit. They are huge. I believe they are 26.1 diameter. I use a humho 165/80/15 on my 15x3.5's in front (26.0 inch) and get no abs light. I have 4000 miles on...