What are the little squares on my rims?

If you take a close look at your car’s wheels, you may notice little metal squares lined up in a row on the inside of your wheel. These are wheel weights and are put on when your wheels are balanced.

Why do wheels have a drop Centre area?

A recessed portion of the wheel, known as the drop centre, allows an installer to mount the tire inside the wheel. The part of the wheel you see when it’s on the car is called the outboard or cosmetic face. The wheel size is its diameter and is measured in inches, such as a 17-inch wheel.

What is rim offset?

The offset of a wheel is the distance from the hub mounting surface to the center line of the wheel. The wheel offset is measured in millimeters and results in a positive, negative, or zero offset. Positive offset is when the hub mounting surface is toward the front or wheel side of the wheel.

What is a hump profile in a rim?

Wide drop center rim may have elevated portion of the rim bead seat, safety contour called hump, at least at the outer bead seat area. Hump enables better tire fitting on the rim, prevents bead of slipping down when vehicle moving at a high speed and stops air escaping when cornering at reduced tire pressure.

What are the tabs on the rim?

Premium Member They are there to balance the tire/rim.

What keeps a tire on the rim?

Tire beads hold the tire to the rim, or the outer edge of the wheel. They’re made of copper, brass, or bronze-plated high tensile steel wires wound into a rubber band. Tire beads prevent the tire from sliding out of place when the wheel rolls.

What will happen if the rim spacing between dual Tyres is too small?

Your differential, which allows the wheels to turn at different speeds so that you can more easily go around corners, will be working overtime and damage could occur. The suspension of your car will be working harder on one side. It may cause the vehicle to want to turn in one direction.

What does JJ mean on a rim?

Helpful Expert Reply: The “JJ” that you mentioned finding on the wheel size listed for the units mounted to your trailer refer to the contour of the bead seat on the wheel, essentially its shape ( “J” indicates the shape of the letter J).

What is a 7j rim?

The wheels width is usually written beside the flange shape marking – e.g: 7j, 7.5j, 8.0j. The width of the wheel is basically the area shown on the photo above and it is measured in inches. In other words, the bigger the number, the “thicker” your wheels are.