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camguynj · 05-05-2015, 01:20 PM

Cart7381

I have 29 and 7/8"

bannonm
If you want a consistent measurement, take it from the bottom of the wheel to the wheel well. Tire pressure and weight can throw the measurement off if you measure from the ground

JusticePete

Front 690mm +/- 5mm
Rear 700mm +/- 5mm

Measured from the bottom of the wheel rim lip, up through the wheel center to the painted edge of the fender on 20" wheels. We use this methodology because it removes differences in tire size brand to brand and inflation. It also uses a hard point (the bottom of the wheel rim lip) to eliminate human error.

VR Baron
Before I knew to measure from the wheel lip and when my car had 30 miles on it the rear was at 30.125". Idid measure later the difference of the tire height which was 3" so 27.125", plus or minus a fraction of an inch from wheel lip to fender

All good info. Thanks much! I'm planning on installing QA1 rear single adjustable coilovers (which use the factory spring) just to get a softer ride -no lowering- so I want to get a baseline height to match to after the install.

05-05-2015, 01:20 PM	#12
camguynj Drives: '13 SS/RS LS3 BRM Cammed NPP Join Date: Jan 2013 Location: NJ Posts: 3,829 View My Garage	Cart7381 I have 29 and 7/8" bannonm If you want a consistent measurement, take it from the bottom of the wheel to the wheel well. Tire pressure and weight can throw the measurement off if you measure from the ground *JusticePete* Front 690mm +/- 5mm Rear 700mm +/- 5mm Measured from the bottom of the wheel rim lip, up through the wheel center to the painted edge of the fender on 20" wheels. We use this methodology because it removes differences in tire size brand to brand and inflation. It also uses a hard point (the bottom of the wheel rim lip) to eliminate human error. VR Baron Before I knew to measure from the wheel lip and when my car had 30 miles on it the rear was at 30.125". Idid measure later the difference of the tire height which was 3" so 27.125", plus or minus a fraction of an inch from wheel lip to fender All good info. Thanks much! I'm planning on installing QA1 rear single adjustable coilovers (which use the factory spring) just to get a softer ride -no lowering- so I want to get a baseline height to match to after the install. Last edited by camguynj; 05-05-2015 at 01:53 PM.