I am about to get new tires, 31x10.50R15 on my 1995 stock Limited. First, do you think rubbing will be a problem since it is a Limited? Also, I want to get a full size spare, if not just a fifth wheel and tire to rotate in and out... but I was wondering if the 31's will fit underneath the rear just like the stock spare did. I do have 2.5" Gibson exhaust, which takes a little bit of space up back there...