Does anyone here know the spring rates for the KW Street Comfort coilovers for an E60 545i/550i application? I emailed them and got no response

 

F: 286 lbs/inch
R: 314 lbs/inch

I carry them if you're interested.

Michael
Owner
Acute Performance

 

Thanks Michael. As you know I'm looking to do the Ksport Coilovers but might try having the spring rates custom made to KW's specifications however, the KW and KSport spring rates are so different?

KW
Front: 286lbs
Rear: 314lbs

KSport
Front: 560lbs
Rear: 504lbs

Are both of these springs progressive?

Maybe I'm missing something here but those numbers seem to be wildly different in the rates and in the sense that KW rates are higher one the backs while the KSports are higher on the fronts

 

If the picture below is the street komfort then it looks like the springs are progressive and linear. The KSports are linear on all corners.



Michael
Owner
Acute Performance

 

Does that mean the Street Comforts are softer? I'm confused at what you're trying to accomplish. Why don't you just get the KWs?

 

KWs are twice the price and KSports have good reviews. I figure I could order the KSport Coilovers with custom spring rates that would give me the ride quality I'm looking for without spending the amount of a KW setup.

 

Sweet! I'm curious to see the end result! Good luck!