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      03-09-2013, 06:15 PM   #1
335dFan
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Fender/Wheel Measurements - 335d

In May 2012 I bought a 2011 335d with base suspension. In late summer I replaced the OEM dampers with some Bilstein B6. I had meant to do some measurements before and after, but neglected to do so. Now that I am going to do a major suspension upgrade next week, I thought I should do some measuring so I can see the changes this time.

When I just finished doing it a few minutes ago, on a level surface, same air pressure in all the tires, i noticed something interesting, even allowing for my human error in measuring. The left rear rides higher than the other corners. Wondered if that is normal, allowing for the weight of the driver or something. Also, the front seems to ride higher than the rear. I took three measurements for each corner and double-checked each one: fender to floor (ftf), fender to center of Roundel badge (ftcrb), and fender to top of tire (fttt). Here are my results. OK, no snide comments about my 4x4 stance.

RF corner
ftf = 26-1/2"
ftcrb = 14-5/8"
fttt = 2-3/16"
LF corner
ftf = 26-3/4"
ftcrb = 14-5/8"
fttt = 2-3/16"
RR corner
ftf = 25-15/16"
ftcrb = 13-15/16"
fttt = 1-1/16"
LR corner
ftf = 26-5/16"
ftcrb = 14-1/4"
fttt = 1-15/16"

Any thoughts on the normal front to rear stock measurement differentials or the difference in rears left to right? Normal, margin of error, etc?
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      03-09-2013, 07:28 PM   #2
Vreimann
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Quote:
Originally Posted by 335dFan View Post
In May 2012 I bought a 2011 335d with base suspension. In late summer I replaced the OEM dampers with some Bilstein B6. I had meant to do some measurements before and after, but neglected to do so. Now that I am going to do a major suspension upgrade next week, I thought I should do some measuring so I can see the changes this time.

When I just finished doing it a few minutes ago, on a level surface, same air pressure in all the tires, i noticed something interesting, even allowing for my human error in measuring. The left rear rides higher than the other corners. Wondered if that is normal, allowing for the weight of the driver or something. Also, the front seems to ride higher than the rear. I took three measurements for each corner and double-checked each one: fender to floor (ftf), fender to center of Roundel badge (ftcrb), and fender to top of tire (fttt). Here are my results. OK, no snide comments about my 4x4 stance.

Any thoughts on the normal front to rear stock measurement differentials or the difference in rears left to right? Normal, margin of error, etc?

Just some more data for you 335dFan
My M package measurements, car is entirely empty.

RF corner
ftf = 25-1/2"

LF corner
ftf = 25-3/4"

RR corner
ftf = 25-3/8"

LR corner
ftf = 25-3/8"


My Wife's 323i

RF corner
ftf = 26-3/8"

LF corner
ftf = 26-7/16"

RR corner
ftf = 25-15/16"

LR corner
ftf = 26-1/16"

Now she has a lot of residual stuff in the trunk and I suspect the rear height has a lot to do with these numbers.
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      03-10-2013, 12:24 PM   #3
335dFan
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Quote:
Originally Posted by Vreimann View Post
Just some more data for you 335dFan
My M package measurements, car is entirely empty.

RF corner
ftf = 25-1/2"

LF corner
ftf = 25-3/4"

RR corner
ftf = 25-3/8"

LR corner
ftf = 25-3/8"


My Wife's 323i

RF corner
ftf = 26-3/8"

LF corner
ftf = 26-7/16"

RR corner
ftf = 25-15/16"

LR corner
ftf = 26-1/16"

Now she has a lot of residual stuff in the trunk and I suspect the rear height has a lot to do with these numbers.
Thanks, your M Sport is pretty even all around. And about an inch lower than mine up front. I think my front is a little high because of the Bilstein B6. But am not sure why my left rear is higher than my right rear.
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