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Cutting it close w/ the offset but it may fit. 8" rim with 30 offset on my car barely clears. Those are staggered rims too so you'd need to run a wider tire out back like 245 or 255 up front and 275 in the back. No point running staggered on a non-RWD car
Pass on those offset spec's as well as the two different widths...... For a 8.5'' width, go w/ a 10mm offset as that'd get the tire/wheel assembly flush w/ the fenders.... A 235-55x 18 tire fits great on a 8.5'' wheel & you can go w/ a 255-55x18 tire as well. .......For a 9.5'' wheel, Get a 0 offset wheel. The critical clearence if the section width of the tire to the rear strut clearence........For the 9.5'' wheel,, you can go w/ a 255-55x18 tire which clears the front when turning. I'd go w/ a 295-45x18 tires thou........A 255 is 29'' tall & a 235 is 28.1'' & a 295 is in the middle at 28.5''. I'm running 9.5'' w/ 295-45x18's..........Another upgrade is going w/ the gen3 bbk.......Rotors, pads & a pr of reman calipers is a direct bolt on......A quick look at the gen2 pads compared to a the gen3 pads tells you as well as going to a 2 piston caliper form a single piston caliper.....