I have a full size spare tire in my RAV4, but it's on a steel wheel. The other wheels are alloys. Initially, I tried 5 wheel rotation but I didn't like the look of mismatched wheels, so I went back to 4 wheel rotation. I just did a tire rotation with a new set of tires with a similar thread depth and I'm tempted to involve the old spare again, at least for one interval. Do you thing it would be of any benefit for the spare?