spring rates

[m3f_sfoster_f5bf245797]

does anyone know what the spring rates are for the two springs on the bilstein pss systems? and is the upper spring rate similar to the spring rate on a ground control school/track strut?



thanks

[m3f_SG_M3_d1201712b5]

the GC kit comes with custom rates, so you pick the spring rate. Pss's are kinda soft, not really sure on their rate.