Had a bit of a judder from the steering wheel of my Z4M. Only really noticeable at higher motorway cruising speeds. Just a bit annoying. Was close to my tyre supplier recently and I asked them them to balance all 4 wheels. They did so and it actually made the shudder worse, it appeared now from slower speeds around 60mph. Brought it back, they tested and they confirmed all wheels were balanced correctly to zero. They rebalanced it using studs rather than the cones. Essentially this rebalance brought it back to where it was before - ie shudder at higher motorway speeds. I decided to leave it as it, assuming the issues was with the tyres, maybe a flat spot.
About a week later the car was in for its service, Inspection I. First thing I noticed on the drive home was that the steering shudder was gone (at pretty much any speed!). Wondering does anyone know what the dealer may have done as part of the service to rectify this? I didn't mention anything about wheel balance to them. Also tyres not replaced and pressures at 30psi, same as before I left it in.
About a week later the car was in for its service, Inspection I. First thing I noticed on the drive home was that the steering shudder was gone (at pretty much any speed!). Wondering does anyone know what the dealer may have done as part of the service to rectify this? I didn't mention anything about wheel balance to them. Also tyres not replaced and pressures at 30psi, same as before I left it in.