Join Date: Sep 2009
Location: Dripping Springs, Texas
Vibration at high speed
My '08 Exige Club Racer has developed a vibration that's very apparent at high speed, I'd say 90+ MPH. This is not just a steering wheel vibration, but a whole car vibration. I've also noticed a similar, much less noticeable vibration that occasionally occurs in the 50-60 MPH range. To try to fix this I've had the tires balanced and I've replaced the shot inner toe link rod ends (and had it subsequently aligned). These attempts had no effect.
All other suspension components look good. The only thing that has me a little suspicious is a small amount of bearing play in the left rear wheel - I can feel a bit of a "thunk" when pulling and pushing the top of the left rear wheel. If this was on my old Rover, I'd consider it "tight", but I know these are cars are a bit lighter and go a bit faster.
Any thoughts on this? I've downloaded the service manual from Lotus but haven't dug into it yet - is it possible to re-torque the wheel bearings (I'm guessing not) or are they sealed units that need replaced?