I installed Super Down springs on my RWD 350 F-sport last weekend and wanted to share some thoughts, information, and pictures.
- measured from the floor to the fender:
front left = 24.68 (2.13 drop)
front right = 24.75 (2.18 drop)
rear left = 24.56 (1.75 drop)
right rear = 24.68 (1.75 drop)
- I took the springs out of the car and raised the suspension to check the max suspension travel. This is the point where the bump stops are fully compressed far enough to raise the car. After taking a few measurements, the front suspension has .75 travel from static height to max suspension travel and the rear has 1.25. Keep in mind, this is not to the point where the bump stops hit, but to the point where the bump stops are fully compressed. BTW - the bump stops are on the shock assembly. RSR does not recommend cutting the bump stops.
When looking at the Super Down vs Down spring specs, I was shocked the SD springs had a softer rate. I called RSR and asked about this and they said the specs are correct. I commented that it didn't make sense for a shorter springs to have a softer rate, however, I believe that I understand what's going on. Due to the info listed in the previous paragraph, I'm certain that the bump stops are in full contact all the time which in turn makes them act like a spring. This would be a reason why the SD springs are softer than the down springs. I might be completely wrong, but it's my theory. I could have verified that by taking a few more measurement, but it's too late now.
There is no camber adjustment on the front or rear of the RWD cars. I subscribed to the Toyota Tech Info System (TIS) and it's stated plain and simple. There is, however, camber adjustment in the front for the AWD cars. So, all I had to do was check and adjust the toe which made the alignment process a lot easier. My rear toe was in spec after the drop (shocker), but the front needed to be adjusted.
front camber = 1.7 and 1.7
rear camber = 2.4 and 2.6
I don't like the rear camber but the only way to fix it is to raise the car.....that sucks!
The drop looks absolutely bad a$$!!!! The ride isn't too harsh, but I'm not going to say more about that until I've put more miles on the car. I don't like the scenario of riding on the bump stops (if that is the case), and I don't like the rear camber.
Stance SC-6 wheels with Conti DW tires
235/35/19 on 8.5+35 wheels
265/30/19 on 9.5+40 wheels
Here is some info about tire sizes I posted yesterday. http://www.clublexus.com/forums/is-t...wered-3is.html
Last but not least: