I think I see that you have the towing package, which includes the 3.75 rear gearing. I think you are fine with the bigger tires since your back differential has the lower gearing.
I have thought about getting bigger, more aggressive tires for my ex when I need them. The only thing I think might be a problem is my 3.55 differential gearing.
Say I got bigger tires the same size as yours, do you think I would be fine with a tire that size on my 3.55 differential without loosing too much engine torque and putting too much strain on the drive train?
Thanks, don't mean to hijack the thread too much with my Q.