If you have X73 measure from the bottom of the rim in front up through the center of the wheel to the fender. I think mine was 25" my gt4 is 24 3/4"F & 25 1/2 R .Using this method you eliminate variations for tire pressure. carl
If you're gonna have people measure this for you, have them measure from the center of the wheel... not the "bottom of the rim" whatever that means. That'll get you the most consistent measurements for comparison regardless of wheel or tire size.
All this is only a way to compare car to car by using a constant. It works, if one car is 1/2" lower its 1/2" lower than the other car. Its that simple and it works. It doesnt give you an actual ride height measurement. My PASM was 25.5 F&26r X73 25F&25 3/4R gt4 24 3/4/F & 25 1/2 R carl
19" vs 20" rims are going to be at least 1/2" difference with the same height. Rim lip, defined as distance from sealing surface to outer rim will vary with make/model of rim.
Center of wheel to fender is best and I will measure my car tonight. It was set up by BGB and is a bit on the low side and I just made that worse by adding a TechArt front spoiler, which hangs lower yet. Put it this way, my HF 1.5 ton 'racing' jack will not fit under the rear lift point and is marginal at the front. Only by using my front end air lift kit can I get the hat for the Jackpoint jackstands on under the front lift point.
I am I following this thread correctly?
If I have X-73 and 20" Carrrera S Wheels my Cayman S is actually closer to the ground than a stock Cayman GT4?
This would not surprise me. My car looks lower when they are side by side. I can image driving a car that is 10mm lower than I am and entering and exiting off roady where there is any real incline at the curb. I have to hit most of them just right to make zero contact.