Suspension Brakes 1st Gen Most liked posts in thread: TSW, now WMW V3 springs

Not sure the standard spring rates on the V3's, but you can get the springs for the V3's customized to whatever rates you want...

Just make sure you dyno them to be sure though--I remember Marc bought springs, and they were way off--they sent the wrong springs. I have the V2's, can't remember the exact rates offhand, but the springs were fine.

 

Think the V2 rate was 200 front and back and with the smaller diameter and straight shape of the front V3 spring, they went a touch heavier on the front, 210 front and 200 rear V3. Least that is what I understood after a conversation with Jeff awhile back when I was considering changing the fronts when doing the camber plates....

 

Think those high rate numbers are for coilover type springs which are smaller in diameter thus the heavier rates. But I'm not sure exactly how they compare. Maybe someone can fill us in.

 

The spring rates for the TSW V3's mentioned above are correct. Yes, they're too soft for a track-only application, yet they're a bit firmer than stock. I believe the stock R53 sport springs were progressive and started at about 160lbs, but I'm not positive. The TSW's aren't a whole lot stiffer than stock, but they're a linear spring so the response is much more predictable.

Track-specific applications use much stiffer springs. Coilovers use smaller diameter springs to save weight and shocks matched to the specific spring rate. Also, the smaller diameter coils are built in standard diameters, lengths, and spring rates, so they can be shared over a variety of applications.

Source: evolutionm.net - View Single Post - Spring rate conversions kg/mm to lbs/in

kg/mm to lbs/in
-----------------------------
16 = 896
15 = 840
14 = 784
13 = 728
12 = 672
11 = 616
10 = 560
9.0 = 504
8.5 = 476
8.0 = 448
7.5 = 420
7.0 = 392
6.5 = 364
6.0 = 336
5.5 = 308
5.0 = 280
4.5 = 252
4.0 = 224
3.0 = 168
2.0 = 112

 

It seems like you're confusing the KW V3 coilovers from TSW, V3 standing for Variant 3 which often have customizable rates that are pretty firm, and the TSW V3 springs, meaning version 3 as they have had 2 previous versions.

They are not the same thing. The springs are much less expensive and are a nice little upgrade while the coilovers cost a bit more and are a pretty darn big upgrade.

KW coilover springs have the rates printed on them by the way (in Newtons/mm i think).

- Andrew

 

Yeah, I was--I assumed the OP had the V3 coilovers, and was asking what the "standard" spring rates were. Looks like it's a "spring only" question in retrospect.

 

That would kick ass if they could make the OEM fitment springs in whatever rate I want to fit Koni Yellows. 250 lbs/in front and rear with maybe a 5mm drop front and rear and that's it. That would rock with Koni Yellows. But i know they'd need a minimum order for that and no one else wants a spring that doesn't lower the car much.

- andrew

 

The OEM springs are linear.

TSW V1, 2, 3 springs are also all linear.

 

Hmm... I thought OEM was progressive in front, but I appear to be mistaken.

 

Yeah, I thought both the OEM standard and JCW springs were progressive...

 

OEM = linear