So, when I bought my set of wheels, they came with 225/45/17's. Three tires were needing to be replaced, and one was brand new. I have since replaced all four tires with 245's, but still have the new 225 tire. My question is, in the event that something happens to one of the 245 tires, can I put the 225 on with minimal problems? The major one I could see would be it spinning faster/slower. Not sure if that is a problem I could have, but looking for someone with more knowledge. Would it be a noticeable difference? Safe or no? Thanks guys!