Looks as if you cannot put 10" rims underneath. Not very practical at all. I measured the wheels that came with it. Good news. They are American racing. They are 8" wide with I believe a 3.5" backspace(as measured). I cannot run huge tires with this backspace, but 225/50/15's seem like they will fit all the way around with no problems. 245's might be iffy. I'm happy to start the work on it. It's a nice diversion from this so-called life.