You would not need a wheel spacer to clear either a 295 or 275 wide tire with this kit. That being said, a 295/60R20 is roughly a 33.9" tall tire and a 275/60R20 is roughly a 34.1" tire, and you may get some amount of rub when turning and articulating. Frankly, we don't recommend using a spacer in conjunction with the Fox 2.0s, since we can guarantee ride quality and you shouldn't take your total front lift beyond 3" without doing a full suspension lift kit.