I've never lifted a truck before, and never been offroading, so I need some help here. I have a 96 sport. I don't want anything really crazy, just a little bigger tires. Heres my questions: 1. Do I HAVE to lift it to put bigger tires? 2. Do they make bigger tires for 15" stock wheels? Every tire place I go to says you can't put bigger tires on an explorer because of the rollover problems. Are bigger tires cheaper or more expensive than stock? I don't know the dimensions of the tires, but 3. what size would I want for maybe like 2 or 3 inches bigger? I think the stock tires are 235-75-15.