Is there anyway to figure out what pound rating a set of rear springs are? The ones I'm looking at are thicker than stock by quite a bit, they are painted yellow. Just wondering.

coil spring rate:

CODE

lbs/in = 1.500.000 x d^4          ------------------------              n * D^3

D coil diameter
d wire diameter
n number of active coils

or just put some weight on them and measure the compression

Put one on a bathroom scale and add enough weight to compress it one inch - read the scale.

Ken