Although not an early valiant mine has 275/60's on it for the track but it is a pita to change a tire. I have to jack the car up as far as I can then drop it on to jack stands and lower the rearend as far as possible and I can just barely wiggle them out. My car is mini tubed and the springs are moved to the rail, 2" blocks, stock A body width axle. When I buy tires next time I'm going with 235/60's unless I get a good deal on used X275 tires like I did this time I run 205/75/14 white walls on the street just in case I have to change one on the side of the road I won't need stands and level ground.