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Cornering Optimizing your suspension system.

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  #1  
Old 07-29-2010, 08:28 AM
E30M3 E30M3 is offline
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I've noticed a shudder on the clubman after lowering it with KW V1's. It happens every time in 2nd gear between 1,000 and 2,000 rpm, and sometimes in 1st gear if the conditions are right. It feels like it's comming from the right front wheel.

My wife approval factor has plummeted for the KW mod. I said it would take away the crashing, bouncing, dartyness and float on a cloud of pillows. Now she says she is scared to drive it cause it "feels like the wheels is going to fall off"

help?
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Old 07-29-2010, 09:14 AM
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This is normal when just lowered, should disappear in 10k or so. The more you lower it, the worst it gets.
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Old 07-29-2010, 12:28 PM
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yep. happened to everyone here. not sure it took 10k for ours to go, but i didn't check.

and if you lower it again (or set at a different height) it can start all over again
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Old 07-29-2010, 12:35 PM
E30M3 E30M3 is offline
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any idea why it does this?
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Old 07-29-2010, 03:53 PM
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cv joints have a race or groove that the bearings sit in. after some driving the bearings wear this groove down more, that's at stock height. now you've lowered the car and the geometry has changed, that groove the bearings used to sit in is now in a different place. you are now effectively "regrooving" the cv joints. consider it a break in period. the wheels are NOT going to fall off.
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Old 07-29-2010, 04:11 PM
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Yeah mine was the same way and has now stopped
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Old 07-30-2010, 03:36 AM
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It's been 1k miles since I lowered mine and the vibration is almost gone.
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Old 07-30-2010, 03:46 AM
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2 slammed minis, 8 years of ownership....still no vibrations

Definitely normal though. There's a speculation thread over on NAM at the moment.
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Old 07-30-2010, 03:50 AM
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2 slammed minis, 8 years of ownership....still no vibrations
Could be wrong, but wasn't there very little time between owning your cars and then lowering them (few miles at stock height)?
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Old 07-30-2010, 03:55 AM
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Could be wrong, but wasn't there very little time between owning your cars and then lowering them (few miles at stock height)?
Depends on the car. Clubman was lowered right away. Cooper spent about a year stock, 2 years on springs, and then came coilovers (if I remember correctly)
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Old 07-30-2010, 04:03 AM
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Depends on the car. Clubman was lowered right away. Cooper spent about a year stock, 2 years on springs, and then came coilovers (if I remember correctly)
Makes sense then. I feel like most people with this issue had been driving around at stock height for say 30k to 50k miles. Although I'm not sure how many miles you put on your cooper in that first year.
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Old 07-30-2010, 04:23 AM
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I avoided this... dropped it with 100 miles on it, 45,700 miles later no shudder.
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Old 07-30-2010, 06:19 AM
E30M3 E30M3 is offline
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I only had 2500 miles when i lowered mine

The explanation above seams plausible, but why wouldn't it shudder when stock and "grooving" the original groove?
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Old 07-30-2010, 07:00 AM
coendek coendek is offline
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the clubman I had also had no vibrations... the other 6.. yup!
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Old 07-30-2010, 07:33 AM
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can't say I remember any shudder like being described and mine was lowered after 30k
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