So driving up to pick up some parts today I had a flat and put on the full-size spare without thinking (I just recently bought the car). I drove for 10 miles or so and it felt like I felt a bit of a wobble or shimmy in the front end so I pulled over. To my dismay the spare had a 235 series tire mounted on it, whereas all my other wheels had 225 series tires on them.
I immediately plugged the hole in the flat and put it back on. I still felt some wobble/shimmy but after a few miles it stopped. This could be all in my head...I'm sure my tires aren't balanced properly but I just want to make sure.
Will driving for ~10 miles with one tire being 10mm bigger cause any significant damage to the differential? I'm trying to rationalize it by thinking about it being similar to a very long extended 5 degree left turn.
**EDIT** So I did a bit of calculation...
235/45/17 = 25.327 in diameter and 79.567 in circumference.
225/45/17 = 24.972 in diameter and 78.452 in circumference.
Difference is 0.355 in diameter and 1.115 in circumference.
I feel like such a small difference being run for only 10 miles or so could not grenade a diff. I also hear no moaning, it's just the shimmy that had me worried, but please correct me if I'm wrong.