ive got 17x10s
and its low as hell 9.5cm to the ground. and 255s, i dont need to lip my gaurd yet, maybe when i try wit 275s on.
i dont know the offset but my rear wheels have much more of a dish compaird to my fronts (17x7.5)
i would measure the offset but its too hard due to having to find the center of the wheel then measure to the center of the wheel, hard to explain but i cant measure it accuratly.