I just bought some used 22's with 265/35/22 tires on them. But 1 of the tire needs to be replaced and the other 3 are in great condition. I want to change 2 of the tires to 285/35/22. So I would have 265/35 in the front and 285/35 in the rear. I would like to change all 4 but tires are so expensive and the old tires still have at least 15k miles on them. So is this a good idea?