Reading Tire Wear & Understanding Tire Wear

OVER INFLATION 
Excessive wear at the center of the tread indicates that the air pressure in the tire is consistently too high. The tire is riding on the center of the tread and wearing it prematurely. Tire  pressure should always be checked with a reliable tire gauge. 

UNDER INFLATION 
When a tire is under inflated, there is too much contact with the road by the outer treads, which wear prematurely. Tire pressure should be checked with a reliable pressure gauge. When this type of wear occurs, and the tire pressure is known to be consistently correct, a bent or worn steering component or the need for wheel alignment could be indicated. Bent steering or idler arms cause incorrect toe-in.

ONE SIDE WEAR
When an inner or outer rib wears faster than than the rest of the tire, the need for wheel alignment is indicated. There is excessive camber in the front suspension, causing the wheel to lean too much to the inside or outside and putting too much load on one side of the tire. The cart may simply need the wheels aligned, but misalignment could be due to sagging springs, worn ball joints, or worn control arm bushings. Because load has a great affect on alignment, be sure the cart is loaded the way it's normally driven when you have the wheels aligned.

CUPPING
Cups or scalloped dips appearing around the edge of the tread on one side or the other, almost always indicate worn (sometimes bent) suspension parts. Adjustment of wheel alignment alone will seldom cure the problem. Any worn component that connects the wheel to the car (ball joint, wheel bearing, shock absorber, springs, bushings, etc.) can cause this condition. Worn components should be replaced with new ones. Occasionally, wheels that are out of balance will wear like this, but wheel imbalance usually shows up as bald spots between the outside edges and center of the tread.

FEATHERING
Feathering is a condition when the edge of each tread rib develops a slightly rounded edge on one side and a sharp edge on the other. By running your hand over the tire, you can usually feel the sharper edges before you'll be able to see them. The most common cause of feathering is incorrect toe-in setting, which can be cured by having it set correctly. If toe-in will be set correctly and this wear pattern still occurs, it's usually due to deteriorated bushings in the suspension. 

We find that in most cases, tire wear is caused by improper tire pressure. The pressure in your tires can change due to outside air tempertures causing the pressure inside to increase on hot days and decrease on cold days. Check your owners manual for the proper air pressure and check them every time you charge the batteries. Low tire pressure will not just wear your tires but also puts more strain on the battries and motor. Your tire life will increase just by taking a little advice seriously.
This page was last updated: January 20, 2013
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Tire Wear
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