Have an 18month old Hyundai i30 which is faultless bar one current issue; the noise the rear suspension makes in cold weather when going over undulations and (not as if the roads are lacking in any of these at the moment) in particular potholes.
I'm no car expert, hence the question(s); is it feasible that either hardening rubber stops/components in the rear suspension, or even damping fluid thickening in the shock itself, could be the culprit?
Sounds like something is loose, but the garage confirmed there isn't after it happened last year; it's a sudden thud/groan from the rear wheel arch area.
Any thoughts/ideas?
