The characteristics of tires for your vehicle are usually those of the original tires (indicated on the flank of the tire). Information on this topic can also be found in your owner’s manual or on a sticker usually affixed to the doorpost of the driver. This essential information is in the form of a sequence of letters and numbers which define the width of the tire, the ratio between width and height, type, its inner diameter, the load and the maximum speed for which has been conceived.

For example, 185/70 R 14 88H means:

185 corresponds to the width of the tire in millimeters. The higher the number, the higher the tire is wide.

70 corresponds to the percentage that the height of the sidewall relative to its width; in this case, the flank height is 70% of the width of the section.

R refers to the type of construction: R = radial.

14 is the inner diameter of the tire expressed in inches. It must of course match the dimension of the rim on which it is mounted.

88 is the load index as the tire can carry at maximum inflation; index 88 corresponds to a maximum load of 560 kg.

H is the speed rating for which the tire was designed; this tire can therefore run at a maximum speed of 210 km / h.

To these data are added the recommended inflation pressures for optimum tire performance. This information is usually provided by the tire manufacturer or the vehicle. In all cases, your specialist SP Tires will easily guide you to the tires that best suit your needs. Besides, check out Chevrolet truck wheels from the site.

What the UTQG?

The Uniform Tire Quality Grading (UQTG) is a ranking system of tire quality that facilitates comparison between different formats on the market. The UQTG measures the performance of the tire in terms of wear, adhesion and resistance to temperature. In each case, a performance rating is assigned to the tire.

The tread wear lets you know, in identical conditions, which tire will wear faster. The assigned ratings typically range from 60 to 700. The higher the rating, the higher the tire will wear resistant. A tire with a wear rating of 600 can basically wear two times slower than 300 tire side.

The adhesion of the tire indicates its ability to stop a car driving straight on a wet surface. The assigned ratings are AA, A, B or C that AA offers the best traction. A tire with traction rating of A will be more effective than another with a rating of C.

The temperature plays an important role in the performance of a tire. This first produces heat due to friction, especially during braking. The tire should allow to adequately dissipating this heat to avoid overheating or bursting. Possible temperature ratings range from A (highest) to C where C is the minimum government requirements.

Your merchant SP Tires will indicate which tire is right for your vehicle and help you to compare different models.

What the rolling direction?

The rolling direction (or assembly) tire means the direction in which the tire should roll by its manufacturer. Long, the tires were symmetrical. These tires have no direction of travel and can be installed forward, backward, left or right. The outer side of the symmetrical tire is marked with DOT.

Innovations in the field of tires have led manufacturers to design tires asymmetric and directional called .Designed to repel water and snow towards the outer sides of the vehicle, they must travel in one direction. They must be fitted to the vehicle according to their direction of travel. Such tires can only be rotated from the front to back or vice versa.

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