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  BMW Forums » BMW discussion forums » BMW Z-Series
  Ah, the coilovers learning curve

 Ah, the coilovers learning curve



Just got a set of H&R/Bilstein Coilovers RSS coilovers installed. Been babying around, trying to get used to them. Three days and I havn't dared to punch the throttle in a corner for fear of breaking loose. Running a new set of Perreli P-zero Neros with 90% tread, Im just scared of the suspension, and for good reason...

Today, I was off on lunch and in bit of a hurry. Pulling out, I decided to punch it and get ahead of the adjacent light on a two lane road. As I'm pulling out I shift @ 4k and sure enough, the back kicks out and Im slidding :correct: :correct: :OVER CORRECT: :correct: :correct: :OVER CORRECT: And Im straight and rolling in 2nd.

Never went into oncoming, but I would have gotten a wreckless. I dodged down the nearest road. Not exactly the learning curve I wanted to experience.

So, my question is... Where do I learn to control this monster I created?! I'm not in fear of my life, but dang.

EDIT: BIMMERFORUMS.com is down.
   Reply » Ah, the coilovers learning curve

Stiffer springs and improved shocks shouldn't make the car more difficult to control. However, your rear traction problems may be due to having too much bump (aka compression) and/or too little rebound in rear shocks. What are your spring rates, and how do you have your shocks set? Also, what pressures are our running in your tires?

Neil

   Reply » Ah, the coilovers learning curve

Quote:
Stiffer springs and improved shocks shouldn't make the car more difficult to control. However, your rear traction problems may be due to having too much bump (aka compression) and/or too little rebound in rear shocks. What are your spring rates, and how do you have your shocks set? Also, what pressures are our running in your tires?

Neil
Rear setup: 35psi, 525 on rear, but I do not know my shock settings. They were matched with the package.

Is it possible my shocks are too soft for my springs?

   Reply » Ah, the coilovers learning curve

Also, I took it up to 100mph and noticed a great decline in stability. It felt like if I hit a pebble, I would go flying off the road. This normal aswell?

I think the 1-2 shift was just a fluke as I was turning and simply over-corrected. Stock Z3s are made to understeer so I had little experience.

   Reply » Ah, the coilovers learning curve

Quote:
Stiffer springs and improved shocks shouldn't make the car more difficult to control. However, your rear traction problems may be due to having too much bump (aka compression) and/or too little rebound in rear shocks. What are your spring rates, and how do you have your shocks set? Also, what pressures are our running in your tires?

Neil

Niel- I agree with where you are going with this....sounds like a sympton of having low airpressure or hitting something like oil on the road.

Did you punch it in the turn or after the turn...could have been as simple as asking the tires to do too much. Sorry for the driver 101....but that really sounds wierd..it should only happen when provoke the car to do more than it can do.

   Reply » Ah, the coilovers learning curve

Hey Bavarian,
I'm in Greenville. Are you a BMW CCA member? Ever go to any of the monthly meetings? We have one coming up this Tuesday at 7:00 pm at Logan's Roadhouse off of Pelham and I-85. There are several MZ3 coupe and roadster guys that show up. We typically have 25 to 35 people to chat with about everything BMW. We have presentations from a vendor or car related services provider about once a quarter. You should check it out sometime.

Regards,
Dwayne


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