*Great information. I put new shocks on my vehicle and i'm still not satisfied with the ride quality for daily driving . so I have been reaching these*
Hey, it’s probably a long shot but I’m trying to swap my stock E84 N20 springs off a E90 N52. I’ve done my research and they’re a fairly straight forward swap but my main concern would be the weight differences . It’s bout 250-350lbs lighter and I’m just wondering if using these would compensate for the it? I have the h&r lowering kit on while I’m happy with the drop, the ride is just too harsh for daily & where I’m at. With the E90 springs, it should achieve bout the same drop while maintaining better ride. Or would it be better just getting springs of the E60? They’re bout the same if not a tad heavier than my E84 but I’m not 100% on the length and drop. Thanks in advance!
Do you have the spring rates for all those other springs you're considering? You'll want to know the spring rate and relaxed length of those springs to calculate how high they'll set the car compared to what you already have. If your current springs are too low, and you feel are too soft, then spring rubbers can help since they effectively create a stiffer spring.
@@FaRKle0079 Not so sure on the exact rates but the springs for E90 328i are C3 fronts and C2 rears, I guess these are BMW own marking for the spring rates? Might have to find out on the relaxed length tho. Same goes for the E60, will need to check them out again. My current H&R are actually too stiff but loved the stance hence I'm looking for alternative by getting it off from the E90/E60 hehe.
@@MrTbmnbo009 Yes, BMW puts stickers with a "two letter code" identifying them. Each two letter code corresponds to a particular part number, but unless you have the engineering document with the key connecting the two you won't really know much about the springs.
@@FaRKle0079 yeah, really hard to get those information. Looked up on various forums and they could only connect the "two letter code" to the models (D# usually msport models while C# usually non msport). Also I did some digging on sachs product catalog, I'm able to get some specs & dimensions for the coil springs and calculated the spring rates with those online calculator. Tho im not exactly sure how reliable the numbers would it be? It's using the OD, wire diameter, total length & number of active coils.
How much did these increase your height vs without? Trying to find a set of rear springs to pair to a set of front f82 springs for my F34. (lowering springs lower my car too much, especially in the rear)
@@Full_regalia I don't recall exactly how much these increased the height, but since it's in parallel with the original spring you can calculate the approximate new overall spring rate (add the base spring rate and spring rubber rate together) and using the corner weight calculate the ride height change. For the F34 since it's so heavy you might even consider F83 springs, which are even stiffer than normal F80/82.
The springs in this video are a stock rear spring (black) and BMW M-Performance aftermarket spring (red). Both are more like 10-11" long. Spring rubbers will work for normal 4-8" coilover springs, but you'll want to see how much spacing there is between the coils and pick a rubber that isn't too thick to fit between them.
