It isn't the best idea to mix and match tires, no matter what axle they are on. Remember folks, different tires have different ride qualities, different heat and speed ratings, different load capacities, and different traction characteristics.

In other words, think of it this way. Since you have older, different tires on the front, and newer tires on the rear, the front of your car and the rear are now handling even more differently from each other than they should be. This MAY cause unpredictable, unexpected, or unwanted control and traction problems.

However, you can mix and match without having much trouble. Just remember, the manufacturer that made the tires that are on the rear of your car made them to work with the same brand, type, and model that should be on the front.

As a rule, I try to always buy matching sets of 4. Safer bet.

If it makes any difference, I run autocross with my Crossfire with the SCCA, and have with some other previous cars. We know that if you don't have a good set of tires, doesn't matter how much horsepower, what kind of suspension you have, how light your car is, or how good of a driver you are- a bad set of tires can ruin everything.

Btw, just a word of advice. I wouldn't go with the Goodyears. I've heard bad things about them actually. Check out Tirerack.com and read ALL of the reviews. There's a lot of complaints about ride quality, tread wear, and noise.