What causes rear tires to wear on the inside edge?
This type of tire wear can be caused by rear toe misalignment, worn rear control arm bushings, excessive flexing of the rear suspension or not rotating the tires often enough (every 6000 to 7500 miles is recommended). A slight variation is heel-and-toe wear that occurs along the inside edge of the tread.
Why are my tires wearing on the inside and outside?
Uneven tire wear is usually caused by improper alignment, overinflation, underinflation or a worn out suspension. Regardless of the season, the effects of winter may linger in your tires: Snow, salt, cold or fluctuating temperatures, and the winter potholes that often afflict roadways, can all cause wear and tear.
What does a scalloped tire look like?
The most noticeable signs of cupped tires are a scalloped treadwear pattern and noise. The tread looks like it was scooped in 3- to 4-inch bits all across the tire, in the middle, or on the edge. This is a result of the wheel bouncing, which means the tire doesn’t touch the surface evenly.
Do back tires wear faster?
Since most cars today are FWD and the front tires are responsible for acceleration, steering and most braking, they normally wear faster than the rears. Rear-wheel drive (RWD) vehicles and part-time four-wheel drive (4×4) vehicles may wear the rear tires faster.
What does scalloping on the edge of a tire mean?
Note scalloping that occurs only along one edge of the tire. Edge scalloping will almost always indicate a more serious problem deeper in the suspension, or with the wheel bearing. As the suspension deflects in unintended ways, the tire will lean either in or out, putting more stress on the edge than on the center.
What causes tread to wear on the outside of a tire?
A lack of rotation can cause this condition. Tread wear on the outer edge of a tire is rare these days, but it does happen. Positive camber, caster and toe can lead to wear on the outer edge. If you see edge wear on one side, check the thrust and setback.
Why are the tread ribs on my tires sharper?
Often caused by a sort of alignment settings such as excessive positive or negative toe and caster angle, the indicators of feathered tires are tread ribs that are worn lower or smoother on one side and sharper or higher on the other. You can also find this wear pattern in between the edges.
What kind of vibration does a scalloped tire make?
A scalloped tire will generally emit a rhythmic thrumming, possibly accompanied by shake or vibration that gets worse with higher speed. If the scalloped tire is on the front, you may be able to feel vibration, or a shake or shimmy through the wheel.