What's this? Overall score emphasizes safety-related tests, including braking, handling, and resistance to hydroplaning. Displayed scores are rounded; models are listed in order of precise overall score.
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Summary:Can be studded for enhanced grip on icy roads. Use winter tires in sets of four for the best balance of handling and winter grip.
The Firestone Winterforce UV is part of the tire
test program at Consumer Reports. In our lab tests, winter/snow truck tire
models like the Winterforce UV are rated on multiple criteria, such as those listed below.
Snow traction reflects the distance our test car needed to accelerate from 5 to 20 mph on moderately packed snow.
We tested ice braking on a skating rink from 10 to 0 mph.
Dry braking is from 60 to 0 mph.
Features & Specs - Firestone Winterforce UV
Size tested The size of the tested model.
Speed rating Speed rating. This letter denotes the maximum sustainable speed and is found directly after the load index. For S-speed-rated tires, it's 112 mph; for T, 118 mph. Speed ratings for other tires include Q, 99 mph; H, 130 mph; V, 149 mph; and Z, 150 mph plus. While such speeds may seem wildly impractical, tires with higher speed ratings tend to provide better handling at legal speed limits. Choose tires that have a speed rating at least as high as the one specified on your vehicle's placard.
Tread The tread is what makes contact with the road. Patterns vary to suit specific performance criteria including tread life, handling, traction, and noise. Tread patterns incorporate ribs and tread "blocks" that contact the road and "valleys" between ribs or tread blocks called grooves for evacuating water. Slits in the ribs or tread blocks are called sipes that provide biting edges useful in wintry weather.