|07-31-2010, 12:27 AM||#1|
Join Date: Mar 2009
The M3 is a little SWIFTer now
If you have seen my other threads then you would have seen my Hotchkis sway bar install and that I am in pursuit of an even better handling e36.
I am currently on TEIN SS-P's and I love them. Now they aren't AST 4200's or TC Kline D/A's but they have been a great coilover to date.
One thing that had bothered me though was the spring rates. I am currently running 559F/532R. For a car that is only 3150lbs, 550+ is a pretty aggressive
rate for a car that is 95% street driven.
So, I started talking to my local shop, HP Autowerks to see what they suggested to increase handling and comfort (I realize this may sound like an oxy moron).
Harold, the owner, suggested that I change my spring rates and at the same time step up to a much better quality spring in the process. Also, he suggested running
a linear spring rate in the rear for more consistent handling. So, I went ahead and did it.
I chose to go with Swift springs as they have had terrific reviews in comparison to Vogtland and Hyperco (both respected brands but Swift outshined them in testing).
Basically, what is to follow is the first TEIN SS-P Swift Spring conversion. Description of picture is below picture.
Everything at the start. Swift 448F/616R Springs, Swift Thrust Sheets, AST Rear Height Adjusters and Vorshlag Nylon Seats.
Swift Front Springs
Thrust Sheets (Help to keep the spring free moving/prevent twisting which results in spring rate increases)
6" 11 Kilo 60mm Spring, quite light
6" 8 Kilo 65mm spring
Front Spring Tein weight 559LB 65mm 7"
Vogtland Weight 450Lb (8 Kilo) 60mm 6"
Rear Spring Weight TEIN, Progressive
Assembled rear spring weight Tein
Assembled rear spring wieght AST
|07-31-2010, 12:28 AM||#2|
Join Date: Mar 2009
Very nicely designed camber plates. Monoball
This change was definitely worth the cost of admission. It was a good way to upgrade and it didn't hurt that they are some of the best if not THE best
springs on the market right now. I did a lot of research and this mod was actually spurred by all the recent testing that has been done by a member on
I know it isn't a direct comparison because I switched up spring rates but the higher spring rate in the rear feels amazingly better and smoother than
the TEIN. I really hated the way my car used to act going into the corners and how high my front spring rates were (it probably decreased traction) but now
the springs suck up the bumps in the road. It feels much more athletic and responsive which is what the advantage is supposed to be of a light spring, a quick
reaction time. The member on E46 actually put the car on a shaker to measure response plus these spring don't sag like the Vogtlands and are worlds better than
This is a great upgrade for all you KW owners as well since your whole system is progressive and has poor spring rates in my opinion and many others.
Special thanks to Leonard at SWIFT for answering my questions and HP Autowerks for getting everything sqaured around for me.
For those of you may think that I am talking out of my, you know. Here is some data that helped me make my decision.
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