guys with uninstalled coilovers: help me out with a measurement!

diputs · 08-18-2015, 10:56 PM

New to the E9x community. Due to monster curb/steep driveway entrance at my house, I had air cups on my E46 with BCs. Now have an E93 and would like to consider switching coils to H&R, Bilstein PSS, KW V1/V2, or ST and possibly re-fitting aircups, but would need to be same front strut shaft diameter as my BCs.

Can somebody with a set of non-BC coils laying around measure the diameter of the front strut piston shaft where if goes into the strut for me? (doesn't have to be a set for an E93--any non-XI E9x would be helpful)

If you don't have a set of calipers for an accurate diameter, using a strip of paper to mark/measure a circumference would be great (20 mm diameter = 62 mm circumference!).

I think most of these struts are in the 20-22.5 mm range--maybe larger.

Thanks for the help!!!!

pj.rodriguez · 08-25-2015, 09:54 AM

I have a Sachs coilover kit sitting in the garage, but I don't think they're the standard piston shafts as they are more like the bilstein setup with the big thick piston and built in bumpstops. I can give you the measurement if you'd like still?

08-18-2015, 10:56 PM	#1
diputs New Member 0 Rep 10 Posts Drives: 2007 335i e93 Join Date: Aug 2015 Location: Durham, NC iTrader: (0)	guys with uninstalled coilovers: help me out with a measurement! New to the E9x community. Due to monster curb/steep driveway entrance at my house, I had air cups on my E46 with BCs. Now have an E93 and would like to consider switching coils to H&R, Bilstein PSS, KW V1/V2, or ST and possibly re-fitting aircups, but would need to be same front strut shaft diameter as my BCs. Can somebody with a set of non-BC coils laying around measure the diameter of the front strut piston shaft where if goes into the strut for me? (doesn't have to be a set for an E93--any non-XI E9x would be helpful) If you don't have a set of calipers for an accurate diameter, using a strip of paper to mark/measure a circumference would be great (20 mm diameter = 62 mm circumference!). I think most of these struts are in the 20-22.5 mm range--maybe larger. Thanks for the help!!!!
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08-25-2015, 09:54 AM	#2
pj.rodriguez Lieutenant Colonel 84 Rep 1,623 Posts Drives: Alpine White 128i Cabrio Join Date: Jun 2013 Location: Toronto, Ontario, Canada iTrader: (9) Garage List 2008 BMW 128i E88 [9.00]	I have a Sachs coilover kit sitting in the garage, but I don't think they're the standard piston shafts as they are more like the bilstein setup with the big thick piston and built in bumpstops. I can give you the measurement if you'd like still? __________________ 2008 128i E88 / Alpine White / Boston Leather Sport / 6AT / M3 Paddle Shifters / Bilstein B8 / H&R Springs / Dinan Fixed Camber Plates / BMW 335i Front Brakes / PIAA Xtreme White 4150K Angel Eyes / Rear Fogs Enabled / Cyba Air Scoops / Euro Airbox / BMW Performance Exhaust / Stubby BMW Antenna
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