Well i'm running 18 inch rims with 245s 45 18 tires, they rub occasionally on the outside of the bumper. This is with the 36mm offset. Now i have 9 inch wide rims so i'm sure i'll be able to put 275s on there but i'm sure those would rub even more especially if the car is lowered. Well i don't think you can put 295 on 18s in the back there unless you modify your bumper.