[curtis73]

Just my 2 cents... putting on a different tire like you described (same service type, different brand) is no different than putting on a brand new tire of the exact same brand while leaving the others partially worn.

I've seen and driven cars with three or four different brands of tire, all the same size. Its ugly and a lazy way of doing things but it works fine.

The main concern is different size. Between tires of the same size (even in the same brand) there are differences in section width, tread width, overall diameter, etc. A Michelin touring tire that is 215/60/15 has slightly different dimensions than a Michelin performance tire of 215/60/15. BUT, its no different than using the exact same tire where three are half-worn and one is brand new. Its also quite possible that since the three good tires on your car were manufactured, the specs or tolerances have changed, or even more consequential is that its possible that the company who makes the carcass or supplies the materials has changed five times since then. Your new tire of the exact same brand and model might be just as different as another name.

If you're anal or picky, replace it with the same exact tire... but it won't do any damage to replace it with a different one.

I might suggest checking the specs of both on the tire manufacturer's website. Avoid tires that are obviously very different in specification.