At 70,000kms, my 2010 NC2 AT is scheduled to be in the dealership tomorrow for them to hunt down the cause of a rather mild steering wheel vibration. It is not akin to steering feedback or the right-left-right movement one would associate with out of balance tyres. Started noticing it about a month ago when tyre noises started. Dealership said my tyres were scalloped. No worries had all four tyres replaced and the noise went away. Also replaced stock suspension to coilovers since the ride was becoming bouncy and body roll was getting too excessive for my liking. My wheels have passed the tyre fitter's test prior to balancing, so no bent rims anywhere according to him, and an alignment has also been done. And oh, wheel lugs nuts are presently torqued to 100Nm.
The vibration has remained since. As I said, it's not severe, but enough to annoy and suck out one's confidence when driving. I note as well that the steering wheel and cabin vibrates slightly while idle at 'D' - it has been rock solid prior. Could this be a sign of worn engine mounts, and if so - could worn engine mounts cause steering vibration while on the move?
I will be asking the dealership to conduct a thorough inspection on the following:
- engine mounts
- tie rods
- ball joints
- control arms
- steering column/steering shaft
- wheel bearings
- wheel hub / wheel centric-ness
As a last resort if the above all pass their test - I will ask them to move the front tyres to the back and see if it could indeed be a faulty rim.
What in your opinion could be causing this issue?
