I run a 4 tire rotation, but only cause my spare is matching in size and offset only. If I didn't pay 100 for the brand new tire and 50 for the brand new rim. I'd probably spend the 400 for a matching spare and definitely rotate the 5. I've been through 3 different tire brands/tread types since buying the spare, if your like me at all in that regard, you'll end up with a mismatched spare eventually if you don't rotate it in.