This is Christy, aka weecamlass from the old forum (they said I couldn't use my old name because it contained "inappropriate words" - would that be the first part of the name or the last?)
Anyway, after teasing my boyfriend about his failure to buy new tires until it was (almost) too late, I decided I'd better take a good look at the ones on my own 2000 mazda protege LS (188,000 miles, driven about 15,000 a year). When I did, I discovered the tires on the front and back are different sizes!
I bought 2 new tires when I got the car 2 years ago (I know you're supposed to buy 4 at a time, but I'm on a budget here). The newer ones are on the front, and they're the correct size according to the owners manual: 185/65. The ones on the back are 175/65. No one, including the guys who installed the new tires, ever pointed this out to me.
Is this bad? I check tire pressure regularly and the car doesn't seem to have a problem, but I want to make sure I'm not hurting anything.
The other question is: I guess I've been lame about rotating tires. I was about to have that done, but now I'm guessing that's not a good idea given the different sizes. How important is it to rotate the tires?