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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > 'Drop survey' - for various aftermarket suspensions setup



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      11-21-2007, 10:20 AM   #1
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'Drop survey' - for various aftermarket suspensions setup

Well i started this thread mainly to gather different ride height of cars (E90/E92) dropped with various suspension setup.
This compilation of infomation serves as a one-stop useful guide for forum members to get a straight forward answer to their perfect ride height without having to search the entire forum. So, i hope you could join in by providing infomation such as:

Type of Suspension: KW V1/2/3, Bilstein PSS, H&R, Tein, ARC, Sach...etc..etc
Wheel Size: 18"/19"/20"
Fender Rolled: Yes/ No
Ride Height Front (Left & Right):
Ride Height Rear (Left & Right):

Measurement: Pls measure vertical height starting from outer rim/wheel edge up to the fender arch as shown in the pic here.

And dont forget to attach at least a pic of your ride.

Thank you for joining.

Sorry to borrow dowdog's pic hope you dont mind..
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      11-21-2007, 11:42 AM   #2
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Good idea, I'll watch this one closely.
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      07-31-2008, 10:57 AM   #3
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Type of Suspension: KW V1
Wheel Size: 19" --> 235/35 and 265/30
Fender Rolled: No
Ride Height Front (Left & Right): 23 1/4" + 23 1/4"
Ride Height Rear (Left & Right): 22 3/8" + 22 3/8"

Can others please post up? I think my rear is too low and am planning on getting it raised a little tomorrow. Wondering what other people are running.

Last edited by samps; 07-31-2008 at 02:58 PM..
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      07-31-2008, 02:38 PM   #4
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nice thread you're starting. I say, you should also add the tire size/width too, so people can decided to either get 265s or 275s.
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      07-31-2008, 02:41 PM   #5
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hmm...
suprised no one has thought of this before

edit: oops forgot to add my info

Setup: H&R Sport Springs
Wheels: 17
Rolled: No
Front: 22 , 21 3/4
Rear: 22 1/8 , 21 3/4

*its kinda weird how the right side a lower
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      07-31-2008, 02:59 PM   #6
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Others please post up. I think that with people in the back it is too low. It lowers 0.5" with about 400lbs in the back. The only downside is that if I raise the back it will give the car a bit of a rake effect.
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      07-31-2008, 04:35 PM   #7
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Whoa hang on a sec, why measure from the bottom edge of the wheel? This can vary depending on what size wheels people are running. From ground to fender is also not a very good measurement as people may run odd tire sizes and / or have too high or too low tire pressures.

The best measurement should be from center of the wheel hub / centercap to the highest point in the fender.

FYI, stock is 14.0"F and 13.8R.

I posted mine in the past, in another thread somewhere. sg335(??) had a thread about this.
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      08-02-2008, 08:21 PM   #8
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uhm... so are we gonna remeasure or what? just curious if i really have to go find the tape measure again
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      08-02-2008, 10:24 PM   #9
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You probably want to add offset to the mix.
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      08-02-2008, 10:39 PM   #10
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I'll post the exact measurements once I get my car back from getting the M-tech front installed (Tuesday) with updated picks.

Type of Suspension: JIC Magic Cross Coil-Overs, UUC adjustable sways
Wheel Size: 18x8.5 et38f 18x9.5et35r
Fender Rolled: No
Ride Height Front (Left & Right): 22-1/2" (Left & Right)
Ride Height Rear (Left & Right): 22" (Left & Right)
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Last edited by TSM330i; 08-13-2008 at 09:27 PM..
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      08-12-2008, 06:04 PM   #11
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^^^ Nice Advans.
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      08-13-2008, 03:55 PM   #12
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Quote:
Originally Posted by westwest888 View Post
Woah, woah, woah. Stop right there friend. You can't just arbitrarily raise or lower ends of your car. You'll completely redistribute your weight balance. It is possible for you to throw it off the factory 50/50. I don't want to see you end up like the guys with Hondas who change out their springs and have an alignment that's visibly bad from 20 feet away.

If the K1 allows height adjustment, you should take it to a race shop and have it professionally corner balanced. This would give you not only proper Front/Back weight distribution, but also proper cross weights FR/BL == FL / BR.

Don't sweat if the front or back are slightly higher or lower.
No I realize that. Thanks for the heads up. Turns out that the rear was too low for the height of the front. I had it adjusted so that the car sits pretty good now. I will eventually have it corner balanced. Feel of the car when driving feels pretty good balanced though. No dive under hard braking.
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      08-13-2008, 08:53 PM   #13
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Quote:
Originally Posted by samps View Post
Others please post up. I think that with people in the back it is too low. It lowers 0.5" with about 400lbs in the back. The only downside is that if I raise the back it will give the car a bit of a rake effect.
When I lowered my G35 I used 3/8" polypropelene "spacers" to seat the rear springs. This kept the rear from dropping too much. IMO, there's nothing worse looking than a car with the rear dropped more than the front.

Anyone here using this kind of spacer on their suspension?
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