Quote:
Originally Posted by tlow98
The front of the Xdrive spring/strut difference lies in the strut housing itself. The bottom spring perch on the xdrive is 12-15mm above what a normal RWD model would be.
So, while a sport spring in the front would normally lower a rwd vehicle 15-20mm. If you match correct weight springs your drop will only be about 5mm in the front if you switch from non sport to sport springs.
Hope this helps.
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Quote:
Originally Posted by nsjames
and now you know why I just spent another $300 so I didn't have to deal with it.
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Quote:
Originally Posted by Tambohamilton
This ^
Xd springs seem to be around 20mm shorter than their non-sport counterparts. So as tlow says you could fit a sport spring and expect very little drop from your standard ride height.
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Not only that, but look at this data from the Sachs catalogue part numbers. I looked up the size specs via
https://www.onlinecarparts.co.uk/sachs-7530421.html
Sachs springs:
330xiT
FRONT: 993 251 (L2/L3)
Length: 350mm
Diameter: 12mm
Outer diameter: 146mm
Parameter: AC-SL
REAR: 994 473 (C6/C7) 330xi
length: 340mm
diameter: 14
outer diameter: 100
parameter: E
330iT Sport (MT chassis code) without tow bar:
FRONT: 993 256 (D5/D6)
Length: 334mm
Diameter: 11.75mm
Outer diameter: 142mm
Parameter: AC-SL
REAR: 994 484 (K2/K3) 330i
Length: 315mm
Diameter: 14.25mm
Outer diameter: 100mm
Parameter: E
To confirm xDrive spring difference, I also looked up sedan specs:
330xi E90
FRONT: 993 251 (L2/L3)
Length: 350mm
Diameter: 12mm
Outer diameter: 146mm
Parameter: AC-SL
REAR: 996 973 (C5)
Length: 340mm
Diameter: 13.75mm
Outer diameter: 100mm
Parameter: E
330i E90
FRONT: 998 450 (C4)
Length: 369mm
Diameter: 11.75mm
Outer diameter: 150mm
Parameter: AC-SL
REAR: 996 972 (C4)
Length: 342mm
Diameter: 13.5mm
Outer diameter: 100mm
Parameter: E
So, yes, there are quite a few sizing differences.
