M030

I read this on 6speedonline but I can't respond their for some reason so I thought I would ask here. Original post by Kevin H. in Atl the M030 is a factory sport suspension. The ROW M030 has shorter springs than US M030, ~-20mm front and -10mm rear, but with the same rates. Stabilizer bars are the same. Shocks are different. Here is a listing of the differences from US standard suspension: US M030 Sport Suspension Front Stabilizer 9.58% stiffer Rear Stabilizer 24.15% stiffer Front Springs 16.6% stiffer Rear Springs 28.2% stiffer Front Shocks (rebound) 21.1% softer Front Shocks (compression) 13.7% softer Rear Shocks (rebound) 26.1% stiffer Rear Shocks (compression) Same ROW M030 Sport Suspension Front Stabilizer 9.58% stiffer Rear Stabilizer 24.15% stiffer Front Springs 16.6% stiffer Rear Springs 28.2% stiffer Front Shocks (rebound) 8.1% stiffer Front Shocks (compression) 9.6% softer Rear Shocks (rebound) 36.1% stiffer Rear Shocks (compression) 15.2% stiffer Where can I find these numbers as compared to the standard Turbo suspension

No hits? Try the Turbo guys.

Good idea but is it ok to post in two places

Yes. I post in the 996 and 997 forums all of the time. A lot of times there are similar topics running concurrently on both forums. In fact, on Friday someone had questions about Leasing cars on the 996 forum. Then about an hour later someone on the 997 forum started a very similar thread. I was able to refer the 997 guy to the 996 thread to get some of his questions answered.

Is there a C2 vs. C4 M030 suspension? In my preliminary reading, I see that there is a Turbo/C4S vs. Narrowbody X73/X74 difference. I'm assuming there is also a Turbo/C4S vs. Narrowbody M030 difference as well. But what I'm more interested in is whether or not the C2 and C4 are suspended differently with these sport suspension. In looking at the PSS9 from Bilstein, they seem to have two separate part numbers for the C2 and the C4. Does anyone know what the salient differences are between the two? Thanks, David

There is little to no point in comparing the differences between the turbo, C4 and a C2. There is a vast difference in weight and that will be the most significance difference in the spring rates, shock valving, rollbar diameter; which has to accomidate the weight. Not to mention the C4 and C2 are different weight balance front to rear and the chassis is more reinforced on the C4. The C4s and turbos use the same rates, but the GT2 is difference because its RWD and lighter. The GT3 is a completetly different animal as its more of a race set up. The parts are also different on all of the AWD cars as they are designed to have power to the front wheels which can cause understeer. This will alter setup to accomidate for this. The bottom line is comparing the suspension for the AWD cars to RWD cars in not useful because the dynamics of each cars are different and mixing and matching won't work. Its more useful to compare C4 to C4S rates and comparing AWD sport to non sport rates. FWIW the X73/74 packages are somewhere about 20% stiffer than the M030 counterparts, but they use the same roll bars.