Quote:
Originally Posted by MTTH
E10-20-031-05-22 is the part number recommended for our xDrive F36 440is by Eibach. E10-20-031-02-22 is the RWD variant which drops the car even lower. I have seen people run both and be fine, it all depends on how low you want your car to be.
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OP car is F32 x-drive. while i'm not disagreeing 5-22 or 2-22 would work, i am not sure of the axle loading differences and whatnot and since eibach/US seems to have some discrepencies, i've been using what
www.eibachshop.com "spits" out, instead.
18-22 doesn't lower much, 20mm(0.8") front, 10mm(0.4") rear, however some of the gap has been already been reduced by taller tires so this amount of lowering should work out. plus there will be the less stress on x-drive half shafts and minimal to no affect on OEM adaptive damper longevity.
if the OP decides he wants it lower than 18-22, there's more research and query necessary to determine the exact alternate kit, imo.