Handling

leaded · 18-04-2014, 11:30 PM

I love the stock CSL handling but on track the front end understeer quickly became the limit and after going to Spa last year and seeing the performance of modded suspension and top mount setup cars I felt I needed to make that jump.

Over the winter the car has had all the suspension bushes replaced, subframe boot floor replaced and new rear subframe bushes, Ohlins road and track suspension and Turner top mounts fitted. Simpsons set the Geo up, Road and also a track setting with the front.

My problem is the car feels awful, I've messed up BMWs ultimate creation!

It feels like it's going to spit me off the road at any second.

The front end at speed wanders around, it feels like windy weather blowing the car around. Under braking the car will pull left or right and I end up fighting the steering wheel. The car turns fast and is much more responsive so much so that it feels it can get stuck turning and you have to back off on the steering input.

Maybe it needs a bit of time to get used to it but it doesn't feel great, I'm always on edge wondering what's coming next.

The Turner top mounts were fitted and the castor adjustment is set to the indicated 0 on the mount. Simpsons didn't check the castor but set the car to slight toe in, 1.75 degrees neg camber front for the road. I have crap tyres on the back (Michelin SS front) which they thought could be the problem (back tyres) but it feels more severe than that.

Is anyone running the turner top mounts and if so what is the castor setting set too?

Anyone got any thoughts on causes, how do people find their cars drive on the road with similar setups?

18-04-2014, 11:30 PM	#1
leaded S3 - On the open road Join Date: Nov 2011 Posts: 83 Casino cash: $2452	Handling I love the stock CSL handling but on track the front end understeer quickly became the limit and after going to Spa last year and seeing the performance of modded suspension and top mount setup cars I felt I needed to make that jump. Over the winter the car has had all the suspension bushes replaced, subframe boot floor replaced and new rear subframe bushes, Ohlins road and track suspension and Turner top mounts fitted. Simpsons set the Geo up, Road and also a track setting with the front. My problem is the car feels awful, I've messed up BMWs ultimate creation! It feels like it's going to spit me off the road at any second. The front end at speed wanders around, it feels like windy weather blowing the car around. Under braking the car will pull left or right and I end up fighting the steering wheel. The car turns fast and is much more responsive so much so that it feels it can get stuck turning and you have to back off on the steering input. Maybe it needs a bit of time to get used to it but it doesn't feel great, I'm always on edge wondering what's coming next. The Turner top mounts were fitted and the castor adjustment is set to the indicated 0 on the mount. Simpsons didn't check the castor but set the car to slight toe in, 1.75 degrees neg camber front for the road. I have crap tyres on the back (Michelin SS front) which they thought could be the problem (back tyres) but it feels more severe than that. Is anyone running the turner top mounts and if so what is the castor setting set too? Anyone got any thoughts on causes, how do people find their cars drive on the road with similar setups?