I've had a groan/rub sound when I fully turn one direction or the other (when making a U turn for example) going on for about a year now. I took it in once and they told me it was a boot that had come loose, and they told me they couldn't replicate the sound again. The sound came about around a month later and has been getting
I noticed it before I bought my new wheels, so I do not believe they are the cause.
I am taking the car into the dealer for a second time on Tuesday and I insisted I have a tech with me so he can hear the sound.
What boot came loose? Did it come loose again?
Assuming the new wheels are not so wrong as to cause one or more tires to rub the noise can arise from several things.
One is even if the new wheels are blameless something has come loose and at full lock a tire is rubbing against something.
(With another car I heard a noise -- hard to describe and not very loud -- at speed. Long story short upon getting down on the ground and with a flashlight I spotted the leading edge of a plastic under body panel showing signs of abrasion. What had happened is some fasteners had failed and at speed air pressure pushed this panel down at the front and the leading edge rubbed against the pavement).
A hydraulic power steering system can make noise when the wheel is turned full lock. This can be normal. Depends upon the level of noise and if the noise is accompanied by any other symptoms.
At a slow speed sharp turn a rotor can lightly touch a brake pad. Because the turn is at slow speed and other noises are not very loud this can be heard. Turns at higher speeds maybe not.
Pedes_Nex tells of an over filled diff. (Never heard of that causing a noise before but I'll put it on the list.)
A bad wheel bearing can be noisy. Generally a noisy wheel bearing goes from bad to worse in a short time. That is it is hard to imagine you driving a year on a bad wheel bearing without the bearing making it known it was the source of the noise.
A bad steering rack can account for the noise.
A suspected bad steering rack can sometimes be id'd by a "test".
Before this test, be sure the tires are properly inflated.
Where you can do this safely at a slow speed make a full u-turn with the wheel turned full lock. As the u-turn progresses, release the steering wheel and let it find its "center". Note the position of the wheel. Repeat this several times. Then do the u-turn in the other direction.
If the steering wheel doesn't return to the same position -- and the car headed straight- each time or when the u-turn is done from the other direction this points to a problem with the rack.