Actual Drop of Swift Springs
 

The specs for these Spec-R springs call for a 1.2" drop (F) and a 1.0" drop (R). Has anyone actually measured this? The reason I ask is that I have measured a drop of .75" (F) on my car, which is .45" less than Swift's specs. (The rear drop was almost exactly 1.0", so that's right on.) I called Swift, and they asked me to measure from the bottom of the wheel lip through the center of the hub up to the fender. This measurement takes tire pressure out of the equation. According to my measurements, Swift says the drop is right where it should be. The springs were installed correctly, the wheel gap looks reasonable, there are no noises, and the performance is excellent.

Here are the measurements on level ground from the GROUND to the fender with 2013-14 OEM 19" RAYS and Bridgestone RE050 tires at 35 psi cold:

BEFORE SPRING INSTALL
OEM SPECS: 27.88" (F) and 27.99" (R)
ACTUAL: 27.875" (F) and 28" (R) +/- .06" L to R

AFTER SPRING INSTALL (3 weeks and 400 miles)
SWIFT SPECS: 26.68" (F) and 26.99" (R)
ACTUAL: 27.125" (F) and 27.06" (R) +/- .06" L to R

So the front measurement should have been less than 27". Also, the ride height is now slightly higher in the front than it is in the rear, which is interesting considering the OEM ride height is slightly lower (~.125") in the front. It is even more interesting because the Swift specs call for a greater drop in the front (1.2" vs. 1.0"), which would make the front ride height that much lower than the rear ride height.

Here are my measurements from the BOTTOM OF THE WHEEL LIP:

AFTER SPRING INSTALL: 24.44" (F) and 24.19" (R) +/- .06" L to R

As I said, I have no complaints about these springs whatsoever. I'm just wondering if the actual front drop is indeed .75".

I am curious to see what others' measurements are.

I remember mine being pretty close to what Swift claims. It's been a while since install and I know have bigger tires so it would be hard to do any accurate measuring.
How long have they been on your car? They do settle some after install. Have you been aligned yet? A change in alignment might make things different.

The springs have been on the car for almost 4 weeks and 350 miles now. I have had the car aligned twice (the next day after install and two days after that). Everything is perfectly within specifications except for front camber, which is -1.3 L and -1.7 R, and even that's not too bad. I have not noticed any significant (more than .06" or 1/16") change in ride height since install, and I've measured every few days.

It would be great to get others' ride heights with Swift springs.

As I mentioned above, based on my measurements, the rep at Swift told me that my drop is exactly where it should be, which would signify that the front drop of these springs is really about .75" instead of 1.2" and that the front ride height is higher than the rear ride height.

mine lined up pretty close to the 1.2/1.0 that was advertised

Swifts are on the car for about 4 years. I have 285/35/19 & 245/40/19 tires and after market wheels. The measurements from the wheel lips may not be comparable to yours, but the distance are the same between the F & B.

From the ground - F 26.75, R 27

From the wheel lips - 23.25 for both F & R.

Give it a bit more time to settle...

http://www.the370z.com/2001910-post1410.html

Very interesting. It seems that your from-the-ground measurement is spot-on for a full 1.2" F and 1.0" R drop. Your rear tires only only marginally taller than the OEM sizes (10mm wider with the same aspect ratio), so those numbers are accurate. I think your wheel-lip measurement is affected by the aftermarket wheels, so you are right; that one is not comparable.

This is more confirmation of my belief that my front ride height is too high. The number has to be less than 27".

Thank you for taking the time to measure and post your results.

I would take a look at the installation. Are the front springs sitting properly? This is the first time I heard about this issue.

There may be issue with the springs, but I can't imagine both front springs are bad.

Good luck.