What is the largest tire size that will fit without modifying the suspension? Stock is 245/75/16/E. It is my understanding that the manuals list up to a 265/75/R16/E is within manufacturer specs. I appreciate anyones experience. Also I heard from a local garage mechanic that there is a recall on the motors of some late model chevy trucks due to the cylinder walls breaking down? Anyone hear this. Thanks.

you can fit 32's on it without rubbing on 10 inch wheels. As for a recall, call your dealer