I want to buy new wheels and but I'm not 100% sure on the size of my wheels. I have 35x12.5R15LT BF Goodrich Tires if that helps? I know the diameter is 15, but I need to know the width (which is what I can't seem to find out-I think its 8 or 10). Also any ideas on what to do with existing wheels? They're still in good shape and I want money from them to help pay for the new wheels.