I "think" I can get a 275 to fit if used on a 9" wheel, maybe a 10" on my 65. I have a 275 mounted on a 17x9 steel wheel now, and it fits under the car, even with the 4.5"BS on the wheel. There is still a bunch of room on the inside to move it in with the right BS. My car is dropped 2.5" in the rear.