for any of those wondering, i called up tokico and they said the fronts are 155 nm and the rears are 200nm. the drop is 1.5" up front and 1.8" in back.
In all my searches for spring rates I found a lot of them saying that Mopar does not publish thier spring rates. As I posted above KW was quoted from another thread that I found, not Mopar, so good luck finding what thier spring rate is for replacement springs. I don't even know who's spring they use for S1. But you might find that out by using the search button and a little inginuity.
one thing about the Tein H-tech springs, they advertise the fronts at being around 170 lbs , which is what the stock springs are. But I can tell you that the front H-techs are much stiffer than 170 lbs, they are much stiffer than stock, I'd say they are approaching 200 ft lbs as a best guess. They certainly are not 170 lbs which is the same as stock springs. I would say the rears are approaching 170 lbs , but definitely not the fronts. Tein advertises a certain drop and a certain sprnig rate on the H-techs but they are off on both counts , you get a much lower drop than advertised and a stiffer spring rate than advertised, mostly on the fronts.
I am now running the Mopar springs, I'd have to say the spring rates are only slightly higher than stock springs, not a big difference in that regard. So perhaps in the 180 lb range, and maybe 140 or 150 lbs on the rears. not a big difference in stiffness, with a mild drop. The front drop is more than advertised thogh, it is a 1.25 inches drop on the front, right around one inch in the rear.
one thing about the Tein H-tech springs, they advertise the fronts at being around 170 lbs , which is what the stock springs are. But I can tell you that the front H-techs are much stiffer than 170 lbs, they are much stiffer than stock, I'd say they are approaching 200 ft lbs as a best guess. They certainly are not 170 lbs which is the same as stock springs. I would say the rears are approaching 170 lbs , but definitely not the fronts. Tein advertises a certain drop and a certain sprnig rate on the H-techs but they are off on both counts , you get a much lower drop than advertised and a stiffer spring rate than advertised, mostly on the fronts.
I am now running the Mopar springs, I'd have to say the spring rates are only slightly higher than stock springs, not a big difference in that regard. So perhaps in the 180 lb range, and maybe 140 or 150 lbs on the rears. not a big difference in stiffness, with a mild drop. The front drop is more than advertised thogh, it is a 1.25 inches drop on the front, right around one inch in the rear.
Can anybody with access to a spring dyno confirm this?
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INFO: what are the spring rates for all the lowering springs - Answers
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