Over inflation of tire. - lower your pressures.
A tire cupping can be caused by tread being lost. A tire cupping means that it should be replaced as soon as possible. You do not want a cupping tire to be used while you are driving. Air can escape and cause a flat.
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.
Cupping is caused by lack of regular tire rotation and proper air pressure. Check the owner's/service manual for frequency of tire rotation and correct air pressure for your vehicle.
Bad shocks, ball joints bad, tires out of balance. More then likely shocks.
Yes, it can but cupping can also have other causes. Over inflated tires can tend to bouce more, especially when combined with weak/worn shocks or struts. When tires bounce cupping can occur when the tires strike the road. Cupping can also be caused by the tire/wheel assembly being out of balance (which can also cause the tires to bounce). Cupping is just one of several types unusual wear on tires.
No, tire cupping is not normal. It is normally caused by worn shocks or struts. It may also be caused by other suspension problems.
A bad universal joint A rear tire out of balance A rear tire with belt separation
bad shocks
yes
Usually seems to be at about 45 mph
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.