Any 17" rear wheel shall rub the lower control arm at an "actual" back space of 6-3/8".
A 3 piece wheel having a calculated backspace of 6-1/2" has an actual backspace of 6-1/4". The calculated backspace allows for 1/2" thick tire flanges, whereas the tire flanges of a 3 piece wheel are actually only 1/4" thick, hence the difference between calculated and actual backspace.
6-1/2" calculated backspace is 1/2" offset (12.7mm). At that offset a 335mm tire sticks-out beyond the edge of the fender by 5mm.
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