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Spirited Drive -- Now rear Camber Negative
Now my rear camber on both axles is noticeably negative. The rear driver side (the one I think I hit the hardest) is the absolute worst negative camber. I can jack up my car on the smooth garage floor and hear the tire adjust quite excessively as the suspension jousts from negative to positive as I jack it up. Then setting it down and rolling it back and forth, it looks like the wheel is about to pop off. So here's my usual checks I did: 1. Extensively inspected the lower control arm bushings -- both are very tight and appear to not moved since I last had them set -- Just to make sure I took a wrench on it to see if I could get it to shift or move. Nothing. Tight. 2. Attempted to shake the wheel in the air with my hands on the 12-oclock and 6-oclock positions to try and determine if any looseness -- found none 3. I inspected the rear: forward&aft control arm -- joints appears to be tight 4. Looked at the lower ball joint -- I replaced this last year and still looks good. 5. Looked at the integral link...still look good Question: Could the rear sub-frame bushings cause a camber issue? I can see extensive cracking of the rubber mount...great. If something were to bend what could be the culprit? I cant tell if any up of upper control arms bent--they look straight and the rubber bushes look fine. Could the spring "saddle" break or deteriorate somehow causing it to sit lower? I couldn't find any evidence of this.
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2003 BMW X5 3.0i -- MT5, 3.64s final gears, H&R lowering springs, K-Mac bushing kit 2007 BMW X3 3.0Si -- MT6 |
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#2
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#3
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The usual defects causing sudden change in suspension alignment are usually the wishbone inner side or the rose bushing (ball joint at the bottom).
You will not be able to "wiggle" the tire unless you first remove the spring tension. https://youtu.be/VYTMJ4qUbFE This video shows the prime suspect of a quick change in toe or camber.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#4
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The subframe is one big piece. If it shifts it would just make the car crab durn the road not affect camber
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#5
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2003 BMW X5 3.0i -- MT5, 3.64s final gears, H&R lowering springs, K-Mac bushing kit 2007 BMW X3 3.0Si -- MT6 |
#6
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They also won't affect camber in any meaningful way.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#7
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Would blowing the rear shocks and/or the rear strut mounts tearing through cause the suspension to sag? Notice any fluid leaking from the rear shocks? In my head without aid from the rear shocks the truck would squat on the springs and cause negative camber.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) |
#8
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Tomorrow I'll try jacking up the control arm a little bit to see if I can take off pressure and feel for any play.
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2003 BMW X5 3.0i -- MT5, 3.64s final gears, H&R lowering springs, K-Mac bushing kit 2007 BMW X3 3.0Si -- MT6 |
#9
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On the picture, you can see the upper portion of the inner fender liner where the tire rubbed on the hard bump. You can also see on the inside of the rotor shield some fresh looking rust...I never seen it before. My springs there I also checked to see if any of the coils broke and couldn't see anything broke.
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2003 BMW X5 3.0i -- MT5, 3.64s final gears, H&R lowering springs, K-Mac bushing kit 2007 BMW X3 3.0Si -- MT6 |
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