Bilstein B12 coil springs
In my research, I talked to a Bilstein rep today and found some info on their B12 rear coils. They provided the following spring rates (but wouldn't release any other info):
Bilstein B12 36-281817 (1.75"): 186 lb/in (3.3% over stock)
Bilstein B12 36-281824 (2.3"): 186 lb/in (3.3% over stock)
Bilstein B12 36-281831 (2.2" w/ 400 lb constant load): 223 lb/in (23.9% over stock)
The lift heights in parenthesis are what they list for the 4th gen T4R. Not sure how closely the real-world numbers are on these coils.
In my research, I talked to a Bilstein rep today and found some info on their B12 rear coils. They provided the following spring rates (but wouldn't release any other info):
Bilstein B12 36-281817 (1.75"): 186 lb/in (3.3% over stock)
Bilstein B12 36-281824 (2.3"): 186 lb/in (3.3% over stock)
Bilstein B12 36-281831 (2.2" w/ 400 lb constant load): 223 lb/in (23.9% over stock)
The lift heights in parenthesis are what they list for the 4th gen T4R. Not sure how closely the real-world numbers are on these coils.
