I just bought a 1990 fullsize Jimmy and want to fill out the wheel wells on a stock suspension. What size are the stock rims? What would be the best combo to fill out the wheel wells including rims offset. I'm trying to avoid any major tire rub. I could live with minor rub at full lock but don't want to trim my fenders (truck has a custom paint job). I do a little on the trails but nothing major so flex is not an issue for me. Also, I live in Pa and can't have my tires sticking out past my fenders.