Will a spare off a 05-08 Mustang GT work which is 185 60-17 (donut)? I'm planning a long road trip next month and don't want to be stranded on the side of the road because of a stupid blow out or tire slashed on a road debri, and I don't want to spend hundreds on a stock bullitt wheel and have to hack off part of the plastic. I understand that a back flat will involve rotating one of the fronts to the back. Otherwise will this work? Also how off in size is the 185-60-17? Is there a tire that could be mounted to the 17" donut steel wheel to match the tallness of our tires? Thanks in advance!---I don't want to be up %$#@ creek in the middle of the mojave desert!