You don't always have to use the exact same size tire but any tire you use must be within 2% of the original rolling radius. This calculator helps you figure this stuff out.
A bad tire can do that. A NEW tire can do this. Read what happened here.
Want to know what a good snow tire is? The Canadian government has a list, and baby, they know snow.
An explanation of a few of the recent advances in tire technology.
There ae a few low cost alternatives to the ubiquitous Michelens that seem to be every bit as good but a fair bit cheaper.
Bring back... that new tire feeeeeeeeeling... ahem yeah uh, how to make new tires feel like new when they don't.
This is the place where we're compiling a list of tire sizes used by various cars. It's fairly new so there's not a lot there, but it will grow over time until it's complere.
Say you have a bunch of extra tires lying around. What's the proper way to store them?