The Tire Contact Patch

The Tire Contact Patch

What is it

It is a mixture of tread, grooves and other components of the tire like rubber and spikes that make contact with the road surface. The contact patch facilitates agile traction at all speed variations. It may differ by design, size, compounds, type of tire and sidewall. It is hard to see the tire contact patch by staring at the car, you can only find its location.

How the contact patch works

As long as the car interacts with the road surface, the contact patch is likely to lose quality and optimal form. The latter is strongly influenced by the rolling and the condition of the road surface. For instance, the contact patch may wear differently in contact with a smooth surface or in off-road conditions. Tread wear on the other side is influenced by the manoeuvres performed by the driver, especially during quick turns. The contact patch is so important because it was created to provide safe and comfortable driving. Moreover, it facilitates the traction process in harsh wet conditions. Tires that are intended for usage in rainy climate consist of special compounds supporting the contact of the patch with the road surface. Rain grooves have the ability to relocate the water from the tread blocks

Load variation

Tire design, size and profile are in constant connection with the contact patch. The size of it could vary based on the above-mentioned factors. Tires with wild construction own enhanced contact patch. The same is valid for the low profile and high-performance tires. Load variation is an important index that provides us with information about the load durability of each tire. It correlates with the contact patch.

Tire ground pressure calculator

It is the pressure exerted on the ground by the tires of all vehicles including cars. It can be a key indicator of any vehicle’s mobility. Its amounts are displayed in “pascals” (Pa). The following formula is used in order to calculate the ground pressure of your car – P=FIA.

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