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      12-04-2012, 03:15 PM   #1
gdgraham
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Why is my car riding lower?

Iíve lived at the same place for nearly two years and beginning two days ago my car scrapes when I leave. Thereís a hump connecting the driveway to the road and my car scrapes in the middle as if its high centered. I have never once scraped and now it happens every time. Whatís going on? Iím on stock suspension (e92). Iíve got 100k miles on it now and Iím wondering if itís just worn out and starting to sag. Had new tires put on and a 4 wheel alignment done the day before this all began but the replacement tires were the exact same size. Anyone have any ideas?
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      12-04-2012, 03:21 PM   #2
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I’ve lived at the same place for nearly two years and beginning two days ago my car scrapes when I leave. There’s a hump connecting the driveway to the road and my car scrapes in the middle as if its high centered. I have never once scraped and now it happens every time. What’s going on? I’m on stock suspension (e92). I’ve got 100k miles on it now and I’m wondering if it’s just worn out and starting to sag. Had new tires put on and a 4 wheel alignment done the day before this all began but the replacement tires were the exact same size. Anyone have any ideas?
Same psi in tires? Too much of a coincidence that this starts day after new tires are installed.
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      12-04-2012, 03:34 PM   #3
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Yep same psi. I thought coincidence too so I called and asked them the same thing, they had no idea either.
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      12-04-2012, 03:38 PM   #4
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It's yours tyres. Did u get a different profile or same? If low then that if same We're they different brand cause they can varie slightly
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      12-04-2012, 03:40 PM   #5
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could be tires, or could be a set of worn out suspension, which is common by that mileage.
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      12-04-2012, 05:02 PM   #6
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My car feels lower too. Pretty sure my shocks are done because the car now feels like it floats on the highway.
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      12-04-2012, 05:04 PM   #7
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if you're still on the original stock shocks at 100k, im betting it's that.
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      12-04-2012, 05:13 PM   #8
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Looks like its time for that New Years resolution aaaaagain....
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      12-04-2012, 05:15 PM   #9
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      12-04-2012, 05:18 PM   #10
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Maybe the concrete/ground moved a bit?
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      12-04-2012, 07:33 PM   #11
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If you bought a different brand of tire that is probably the cause, considering it was basically the same time this started to happen. Shocks and struts do not change ride height, coil springs do. Not saying the coils haven't sagged slighted over the years also.
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      12-04-2012, 08:10 PM   #12
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Could be the tires, could be the suspension sagging. When were the shocks and struts replaced last? I am still a little new to the E90's but do the springs start to sag on these cars after some time or use?
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      12-04-2012, 08:29 PM   #13
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100k miles is about right to change the shocks depending on the roads you generally drive on.

Sounds like a coincidence that you're scraping right after you swap tires though. I would double/triple check the tire size and profile.
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      12-04-2012, 08:58 PM   #14
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Are they the same brand and model of tires. Althought they are the same tire size there is still some size variation
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      12-04-2012, 09:00 PM   #15
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Quote:
Originally Posted by J02 335i View Post
...Shocks and struts do not change ride height, coil springs do. Not saying the coils haven't sagged slighted over the years also.
Glad someone said it....
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      12-05-2012, 01:02 AM   #16
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I woudlnt be surprised if the ground is settling and the angle between your driveway and the road has changed. That will do it. It has been happening in my neighborhood. The angle of my driveway has changed by about 5 degrees since we moved in.
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      12-05-2012, 01:59 AM   #17
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      12-05-2012, 07:55 AM   #18
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I woudlnt be surprised if the ground is settling and the angle between your driveway and the road has changed. That will do it. It has been happening in my neighborhood. The angle of my driveway has changed by about 5 degrees since we moved in.
This...

How long ago was your driveway put in, OP?
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      12-05-2012, 08:02 AM   #19
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Possibly putting the car on a lift and the shocks being extended fully and then lowered back down, possibly breaking the seal on the hydraulics and causing them to be totally broken. 100k on shocks is a long time.
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      12-05-2012, 08:58 AM   #20
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Quote:
Originally Posted by J02 335i View Post
Shocks and struts do not change ride height, coil springs do.
Apparently this can't be stated enough
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      12-05-2012, 09:35 AM   #21
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Possibly putting the car on a lift and the shocks being extended fully and then lowered back down, possibly breaking the seal on the hydraulics and causing them to be totally broken. 100k on shocks is a long time.
See posts 11, 15 and 20.
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      12-05-2012, 09:41 AM   #22
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your airbag suspension is adjusting for teh lowz.
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