![]() This number is directly related to the Load Index. Remember to multiply this number by the number of tires installed on your vehicle to get the maximum carrying capacity. The grade for each of these can be found on the sidewall of your tire (except for winter tires and certain light truck tires). The UTQG rates tires are rated on their tread-wear, traction performance, and temperature resistance. National Highway Traffic Safety Administration (NHTSA) created the Uniform Tire Quality Grading System (UTQG). Even though there was not real off road testing, the snow test gives a pretty good hint on how the performance on mud would be.To help consumers evaluate their tires, the U.S. It excels in wet, dry, snow & ice against its counterpart BFGoodrich’s Mud-Terrain T/A KM3. Overall, it was a dominating performance of General’s Grabber X3. This was in alignment as Mud-Terrain T/A KM3 was 38 dollars more expensive than Grabber X3.ĭifference: +12% more expensive for Mud-Terrain T/A KM3. Priceīeing the undisputed technology leader, we would expect BFGoodrich (Michelin) to command the highest priced tire in the market. GENERAL GRABBER X3 315 70R17 DOWNLOADWe even have a free download on the latest UTQG values from the leading tire manufacturers. MT tires usually come with really high tread depth and this could be easily a marketing point.įor more in depth information about UTQG, please check out this article here. It was also noted that both tires do not provide any mileage warranty which is strange from my point of view. As both products are releasing their sizes based on the light truck (LT) designation, UTQG rating is not mandatory. We have previously shown that UTQG tread wear rating can be a good indication of your expected mileage. The difference in ice was only marginal as Grabber X3 only out-brake Mud-Terrain T/A KM3 by 1 feet (0.3m) from a braking speed of 12 mph (20 km/h) to 0. With such dominating performances in snow, we would expect this to continue in ice. Overall, Grabber X3 is clearly the better snow tire. While it was also quicker in lap time (2.6 seconds !) and also subjectively better in snow handling (+0.5 points). It was also extremely good when it came to snow acceleration as it took 6.56 feet (2m) less distance to accelerate from 0 to 12 mph (20 km/h). It stopped 5.48 feet (1.8m) earlier than Mud-Terrain T/A KM3 from a speed of 25 mph (40 km/h) to 0. With wet & dry tests dominated by Grabber X3, the same can be said for snow tests. However as Tire Rack did not test off road, snow performances would give us a good indication on how well the tires perform off road. Only 3 peak logo certified tires require both tires to pass a certain threshold of snow traction level as determined by the legislation. -0.8% in average of Noise, Comfort & Ride Quality.Īs both tires has only the M+S logo on it, they can not be legally certified as a snow tire.Grabber X3 came out slightly ahead at 5.67/10 rating compared to the 5.5/10 rating of Mud-Terrain T/A KM3 with noise & ride quality being the main differences. In the end the scores for both tires are really close but at a very low level compared to AT or ATR segments. This would result in a high level of noise due to the air vibration generated by the air in the grooves. With such a large pattern void, air pumping is at its maximum for mud terrain tires. When it comes to mud terrain, noise, comfort & ride quality is usually the lowest priority. Grabber X3 managed to brake 1 feet (0.3m) earlier compared to Mud-Terrain T/A KM3 from a speed of 50mph (80km/h) down to 0. While things overwhelmingly favored Grabber X3 in wet, there was not much difference between the 2 tires when it comes to dry braking. However this is the default daily usage and the tires have to perform at a very consistent level. Overall, it can be clearly seen that Grabber X3 is much stronger in wet compared to Mud-Terrain T/A KM3.Īs for dry, safety is usually not an issue as the braking distance is much longer than wet. For the subjective wet handling rating, Grabber X3 fared better with a subjective score of 6.31/10 compared to 5.75/10 of Mud-Terrain T/A KM3. The advantage in wet continued in handling as Grabber X3 had a 1 second advantage in lap time against Mud-Terrain T/A KM3. From the wet braking test, Grabber X3 out-brake Mud-Terrain T/A KM3 with a braking distance difference of 8.9 feet (2.7m) ! Mud terrain tires are usually not known for its wet braking capabilities as it has a low contact area due to the large voids for off road usages. It was so important that the EU label has wet braking as one of its three criteria. Hence it is more likely to get into a road accident during wet conditions rather than on a sunny day. The friction of coefficient of the tire/road dramatically decreases in wet roads compared to dry roads. ![]()
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