Need some pics!
If you're towing heavy, be cautious about too big of a tire...increasing the outside diameter of the tire has the effect of reducing (numerically) your rear axle ratio and affecting your tow capabilities. Stock tires on my '01 were 245/75-26 on 16x6.5" GM rims, I went to 265/75-16 on 16x8 rims. The increased diameter of the 265's effectively reduces my rear axle ratio from a 4.10 to a 3.94.
So for me it was a compromise, I wanted bigger tires for beach driving but didn't want to kill my towing power on those long interstate grades either. I;m not saying don't put bigger tires on, just that you should be aware of how it will affect towing.
Here's the formula.
