I'm curious as to what is the biggest mud tire than I can put with my stock suspension. I have another set of 15 inch 6 lug rims and I would like to get some mud tires and mount on those rims for weekend mud adventures. I don't plan anytime soon to lift my truck any at all. I drive my truck over 100 miles a day and enjoy getting 20-22 mpg with my stock sized tires.
If the hole in the middle of the rim isn't big enough for my manual lock out hubs, what is the best way to enlarge the hole?