RSAErick

Hi all,
I would like to expand on some interesting information that Jeff Curtis provided about spring rates in an earlier message. Here is a more comprehensive list of spring rates for some common lowering and coil-over springs for the 964.

Please feel free to expand on or correct this information.

Eibach 964 Pro-kit springs (like mine)
Front 82.6-250 lbs/inch
Rear 188-256 lbs/inch

H&R 964 springs
Front 190-255 lbs/inch
Rear 220-265 lbs/inch

H&R 965 (Turbo) springs (Jeff Curtis)
Front 250-270 lbs/inch
Rear 265-285 lbs/inch

H&R 964 Coil-over
Front 250-285 lbs/inch
Rear 265-285 lbs/inch

H&R 964 Super Cup
Front 455 lbs/inch
Rear 685 lbs/inch

Porsche Carrera RS springs (Bill Gregory)
Front 250-308 lbs/inch
Rear 375-508 lbs/inch

Thanks to Jeff Curtis and Bill Gregory for helping with this information.

Erick

Dave R.

Nice report, thanks Erick (& Jeff & Bill).

Interesting numbers.

RSAErick

Update - from J. Colasante

Carrera Cup springs
Front: 200-600 lbs/inch
Rear: 240-800 lbs/inch

JC in NY

Joel Reiser actually was kind enough to supply those Carrera Cup measurements to me using his own spring rate tester recently.