I just picked up two 15x5.5 steelies for the front. My question is whats the widest tire I can run on them??
Measure the width of the rim (distance between the surfaces where the tire beads will be) and then look here. http://customwheelsmarket.com/rimwheelwidth1.html
Tire Rack. com is also very helpful. If you look up the tire you want to buy and then click on the link for the specs it will tell you the the rim sizes recomended for that tire.