Tire FAQs

We don’t have prices listed as we do not sell directly to consumers. You can search for your local Atturo retailer or a few of our authorized online retailers here: Dealers – Atturo.

eBay, and Wal-Mart are not authorized retailers of Atturo brand tires. Due to their marketplaces consisting of retailers from almost anywhere and everywhere, it is impossible to ensure the actual seller is an authorized retailer who has acquired their stock through legitimate sources, stored the tires appropriately, and has handled the tires properly. The information posted on these websites is often inaccurate and can be misleading which can lead to a consumer purchasing an improper tire for their vehicle.

You can purchase tires at any of the authorized dealers listed on our Online Dealers page.

Load range is used to describe how much air pressure a tire can hold and as such indicates how strong the tire is. Load range is used to estimate how much air pressure a tire can hold. In general, the more air pressure a tire can hold, the greater the load it can support as well. However, the load index is used to reflect how much weight, or load, a tire can bear. Load ranges will typically be A – G which is only 7 different categories. Load index, however, can range from 0 – 150. This makes the load index much more precise as to how much load the tire can hold.

When looking at the sidewall of a tire, there is a lot of information. Finding your tire size is easy within all that information. The tire size is likely a bigger size font than the other information and will be in a format such as this: 235/55R19. The first number is the section width of the tire measured in millimeters. The second number relates to the sidewall height of the tire. It is given as a percentage of the section width. For this example, the tire sidewall height is 55% of the tires section width of 235 mm, or 129mm.

The “R” is often mistaken to stand for “rim size” but it actually indicates that the tire is a radial tire. The confusion of this is because the last number is the wheel diameter that this tire fits on. In this example, a 19-inch wheel diameter. You can then use this information to get the overall dimensions of the tire.

Since we know the sidewall is 129 mm, you can double this to get either side around the wheel for 258 mm, or 10.16 inches. Add in the tire diameter of 19 inches and you get an overall diameter of 29.16 inches. The section width is already known at 235 mm, or 9.25 inches. This tire measures approximately 29.16 inches by 9.25 inches.

UTQG stands for Uniform Tire Quality Grading, and it measures a tire’s treadwear, temperature resistance, and traction. The first grade is for the tire’s treadwear and gives you an approximate estimate for how long the treadwear will last. The higher the number, the more miles can be expected before the tread wears out. The 2nd grade measures how much force the tire generates on a wet surface. These grades range from C to AA where AA is the best. The last grade measures the tire’s resistance to temperature, specifically heat. The grades range from C to A where A indicates that the tire is most capable of maintaining performance in higher temperatures.

Speed ratings were created to match the speed capability of tires with the top speed capability of the vehicle to which they are applied. A vehicle capable of speeds of up to 149 mph should have a tire with a speed rating of “V”. Alternatively, off-road tires typically have a lower speed rating as they are designed for off-road use and typically have a speed rating of Q which has a top speed of 99 mph. It is recommended that a replacement tire have the same speed rating as the original tire. If a lower speed rating tire is selected, then the vehicle’s top speed is reduced to that of the tire. While it is common and permissible during winter to use a winter tire with a lower speed rating, it is very important to understand that the top speed of the vehicle is then reduced to the top speed the tire is capable of safely achieving and sustaining.

These red and yellow dots are put on at the factory that indicates the “high” and “low” spots on the tires that help installers balance the tires quickly and use as few wheel weights as possible. Since the valve stem assembly adds weight to a specific spot on the tire and wheel assembly, knowing where a “high” (heavy) and a “low” (light) spot on the tire helps the installer determine a good starting point to mount the tire so that the assembly will already be fairly balanced.

While some vehicles will be ok with replacing only 1 or 2 tires as needed, most vehicles will require at least the tires on the same axle to not differ by more than 2/32nds of an inch in diameter. The difference in the amount of circumference means the tires will be rotating at different speeds to cover the same amount of distance and this can cause undue wear to the vehicle. Certain drivetrain systems such All-Wheel Drive or Four-Wheel Drive may require all tires to be within a certain tolerance of overall diameter. Always check your vehicle owner’s manual for these specifications before installing less than a full set.

You can use our tire pressure calculator here: PSI Calculator. A tire’s main objective is to “carry the load” which is achieved by proper air pressures. Underinflation will cause the tire’s edges to wear more rapidly. This also causes a tire to “drag” against the road surface instead of roll. The dragging will create excessive heat, prematurely aging the tire and decreasing the tire’s “rolling resistance” which will increase fuel consumption. Conversely, “overinflation” will “crown” the tire wearing the center tread and impacting the tire’s ability to evacuate water causing potential steering loss.