Tire Mileage and Sizing Question

[rick3000]

Hi Everyone,

It looks like I need yet another set of rears (two actually), I consider it a cost of enjoying everyday driving. I am averaging about 50-60k on the front tires, and 25-30k on the rears.
How is everyone else faring?

Currently, I am running BFGoodrich g-Force T/A KDW 2 in the summer, and Continental ContiWinterContacts in snow. Both sets of rears are almost bald. Continental has updated the model, and no longer makes 255/40-17, and BFGoodrich sells the same tires but has discontinued the 255/40-17. The closest match is a 255/35-17.

Should I try a different size or should I mix and match brands to get the right size? Obviously, this will not be an issue when I replace all four tires the next time around.

Thanks!