I have 2 different size tires on my wifes 99 camaro. 225/55zr16 245/50zr16 do i have to keep it tbis way or can they all 4 be tge same size?

 

you can change them to all one size as long as you don't go to big on the front to cause steering issues, such as tire rub

 

agree and i like the 245's, 275's on front seem to be a bit much for me.

 

Plenty of room in the front, I have 275s, no rub, have seen one with 305s all around. Those will not fit your wheel. Your car came with 235/55/16. If you get 4 of the same non directional tire, you can rotate for max tire mileage.