Tire cupping can be caused by worn out shocks or struts, weak springs, bad wheel bearings, loose parts, defective tire, or a tire out of balance.
During acceleration? I'm not sure. But when both idling and acceleration the engine's combustion can cause a lot of vibration in the steering wheel if you are in an older vehicle.
Cupping of tires indicates many of things depending upon where the cupping is. Center tread cupping is a sign of under inflation or bad shock absorbers while cupping on the edges can indicate bad wheel bearings, bad ball joints or bad steering.
Out of alignment.......warped brake rotor......broken belt in a tire.....
maybe the car need to be linged up n check the power steering.
well... there are many different causes for vibrations. The most common cause for steering wheel vibration at high speed is poor wheel alignment.
Go to a garage, and get the wheel balancing checked out on the front wheels.
most of the time bad allignment or not balanced tires. You could also have a bent rim.
You will feel a vibration in the steering wheel
Your AC should have NOTHING to do with your barking system, as it is not tied into the vacuum of the engine. If your wheel shakes under braking, then you need to replace your rotors and pads.
When an engines motor mounts go bad the vibration is felt throughout the entirety of the car. The motor mounts should be inspected to see if the rubber inserts are cracked.
The most common cause is a tire out of balance. It can also be a bent wheel, defective tire, wheel bearing, or steering parts worn.
Usually it's a wheel balance issue, but it can also be worn steering components, a bent wheel, a faulty tire or a bad CV joint.