Ok, I did a fairly accurate measurement to find out my AR 16x7 offset, and it turned out to have ~25mm (counting in common error, I'd say they're between 22mm and 27mm. Using this as a comparison, I was able to use 1010tires.com offset calculator to judge how certain Koseis would fit on my car.
At the moment, the rears have some tire tuck with about 1.5" gap from the strut, and .5" gap from the fender (unrolled, untouched).
The fronts have no tire tuck--they're about .75" below the line of the fender. There is a knuckle-sized gap between the inside of the wheel and the strut, and about the same .5" gap from the fender--if the car were lowered.
My choices for wheels are these (all being Kosei K1s):
15x8 ET12; strut distance would be the same, I would have to roll the fenders ~15mm.
15x8 ET27; rears would be perfect, fronts would need a 5mm spacer and the fender would have to be flattened.
16x7.5 ET12; more gap from the strut, all the fenders would have to be rolled ~8mm.
16x7.5 ET43; I'd run 20mm spacers all around, no rolling needed (I predict).
16x8.5 ET27; run either a 10 or 15mm spacer all around, extensive amounts of rolling would be needed.
All these are just predictions for what would happen, I would only find out for sure when I physically have everything in my hands.
To me, the 16x7.5 ET43 or the 15x8 ET27 (both would get 225s) look like the best choices so far, but I would love to have the 16x8.5s with 245s; I don't know anyone locally who has a fender roller, and if someone does have one, then I'd need to do the rolling sometime next week as I leave for Arizona on the 16th.
Actually, I could do a staggered setup, not sure if that's the best idea for an e30, but perhaps with my sway bars and engine power, oversteer would be lowered, and it would feel more in control...I dunno, just thinking. So that would be the 16x8.5s out back with no spacer, and flattened fender, and then the 16x7.5 ET43 up front with a 20mm spacer, and no rubbing.
Anyone have any suggestions or comments?
Thanks.
At the moment, the rears have some tire tuck with about 1.5" gap from the strut, and .5" gap from the fender (unrolled, untouched).
The fronts have no tire tuck--they're about .75" below the line of the fender. There is a knuckle-sized gap between the inside of the wheel and the strut, and about the same .5" gap from the fender--if the car were lowered.
My choices for wheels are these (all being Kosei K1s):
15x8 ET12; strut distance would be the same, I would have to roll the fenders ~15mm.
15x8 ET27; rears would be perfect, fronts would need a 5mm spacer and the fender would have to be flattened.
16x7.5 ET12; more gap from the strut, all the fenders would have to be rolled ~8mm.
16x7.5 ET43; I'd run 20mm spacers all around, no rolling needed (I predict).
16x8.5 ET27; run either a 10 or 15mm spacer all around, extensive amounts of rolling would be needed.
All these are just predictions for what would happen, I would only find out for sure when I physically have everything in my hands.
To me, the 16x7.5 ET43 or the 15x8 ET27 (both would get 225s) look like the best choices so far, but I would love to have the 16x8.5s with 245s; I don't know anyone locally who has a fender roller, and if someone does have one, then I'd need to do the rolling sometime next week as I leave for Arizona on the 16th.
Actually, I could do a staggered setup, not sure if that's the best idea for an e30, but perhaps with my sway bars and engine power, oversteer would be lowered, and it would feel more in control...I dunno, just thinking. So that would be the 16x8.5s out back with no spacer, and flattened fender, and then the 16x7.5 ET43 up front with a 20mm spacer, and no rubbing.
Anyone have any suggestions or comments?
Thanks.
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