1988 Cutlass Supreme Question

nickonometry

nickonometry

n00b
Sep 9, 2019
3
3
Hey guys, been browsing the web and these forums but haven't found a definitive answer. I just need to know what the PCD of my 1988 Cutlass Supreme is. Some wheel fitment sites say it's 5x4.75 (5x120.65), but the company I'm working with is pretty confident that it's actually 5x115mm. Just curious if anyone knows for sure before I pull the trigger on some wheels.

Thanks!
 
nickonometry

nickonometry

n00b
Sep 9, 2019
3
3
5x4.75....they're looking at the FWD Cutlass not the G body RWD.
Cool thanks man, that's what I figured. If my math is correct, 5x120.65 should be the metric variant of wheels I can get, so I ordered some 18x9.5's for the back to test fitment
 
Gonzo1970

Gonzo1970

G-Body Guru
Supporting Member
Sep 30, 2018
766
93
Interesting.

1988 was the final year for the Rear Wheel Drive Cutlass. The new Front Wheel Drive Cutlass was available mid-production 1988.

So, there was the rear wheel drive AND the front wheel drive available in 1988, apparently.

THATS why Im seeing the discrepancy in rim sizes (I was seeing 5x4.75 and 5x115 as well)

If you have the Rear Wheel Drive (G-Body Style) its 5x4.75

If you have the front wheel drive (ugly) style, its 5x115mm.

-Gonz
 
Injectedcutty

Injectedcutty

Comic Book Super Hero
Nov 24, 2014
4,859
113
Louisville, KY
Cool thanks man, that's what I figured. If my math is correct, 5x120.65 should be the metric variant of wheels I can get, so I ordered some 18x9.5's for the back to test fitment
That'll be a tough fit with stock wheelwells on a Cutlass. Post up the results. I'm running a 17x8 with 4.5" BS on the rear of my 87 Cutlass with a 255/45 tire and there is about 5/16" from rubbing the frame.
 
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