Hi again, it has been a while.
I have bought a 2001 330d BMW touring a few months ago. Replaced front control arms, so have new ball joints and replaced to old bushings with polyurethane bushes as I have noticed the rubber bushes can cause the front wheels to move forward and backwards quite a lot under a bit of strain like braking and uneven road surfaces. When driving at lower speeds the steering is nice and solid but quite heavy, faster speeds there is a slight nock on the steering wheel.( not wheel balancing,more like a slight play) The car tramlines quite a bit and is a bit unstable to drive at higher speeds. Before replacing the cheap wanli tyres for T1R proxes and the bushes the drive was a bit more stable except for under braking, where it sort of chose by itself which way it wanted to swerve.(not good) I have an Vauxhall astra with a fully polyurethaned suspension, fully adjustable coilovers and Toyos that has been set up by Tony that is an absolute pleasure to drive. Stable at any speed turns on a penny at any speed and the feedback from the suspension is progressive, ie. do not just break away, it let you know what it is about to do. The BMW has a M-tech II suspension and I feel that it could be much better than it is at present. Even my wife prefers the astra as she says the BMW is a scary drive. I know I have to take it to Tony for a good seeing to before jumping to any conclusions but some feed back and experience would help in getting this setup just right. I am also using the standard tyre pressures as printed in the manual, 2.9 bar on the rear and 2.4bar on the fronts. Are those pressure for RFT? I assume that it might have to be different because of different stiffness in the sidewalls?
Sorry for the longwinded post but i suppose the more info, the more accurate the replies will be.