I finally needed to replace my original tires (225/75 R16) on my nitro after 32k miles. I visited my local Discount Tire dealer ship expecting to put 245/70 R16 on. I had done my research and several posts stated in the tech specks that 245/70 R16 was the largest tire I could put on my stock rims. The tech at Discount Tire looked up the Nitro plus 0 sizes and said he could put 255/70 R16 on. So now I'm the proud owner of a set of Pirelli Scorpions, 255/70 R16, and they look fantastic.