What is the best treadwear rating?
For enthusiasts, the best part of the treadwear spectrum is the lowest part. Tires with treadwear ratings of 350 or less tend to have some performance pretentions, but for serious drivers and competitive racers, the only tires they will ever consider have treadwear ratings of 200 or less.
What is the highest traction grade?
Traction is graded “AA” (highest), “A,” “B” or “C” (lowest). While more than three quarters of all tires are rated “A” or better, only 3 percent are rated “AA.” Just over 20 percent are “B” and only one line of tires is rated “C.”
What does treadwear 360 mean on a tire?
Treadwear – In our example the number is 360. Assuming a baseline tire would test at 100, the 360 treadwear indicates that this tire would last 3.6 x longer than the baseline. It’s important to note that this rating is specific to each manufacturer.
What is treadwear and traction?
Treadwear. Treadwear grades are an indication of a tyre’s wear rate. The higher the treadwear number, the longer it takes for the tread to wear down. Treadwear grades are tested under controlled conditions using four vehicles fitted with test tyres that run in convoy.
How long will 200 treadwear last?
A tire rated at 200 has a projected tread life of 60,000 miles.
What is treadwear 300?
Treadwear grade: A government-required number that indicates a tire’s expected wear. A grade of 300 denotes a tire that will wear three times as well as a tire graded 100.
What is aa tire traction rating?
Traction (the safety rating) A traction grade tells you how well your tire can stop in wet conditions. The highest traction grade is AA, followed by A, B, and C. Tires with an ‘AA’ traction rating should stop at a much shorter distance than a tire with a ‘C’ rating.
What does traction a temperature a mean?
Temperature grades range from A to C, with A being highest rated and therefore most resistant to heat generation. Tires graded A effectively dissipate heat up to a maximum speed that is greater than 115 mph. B rates at a maximum between 100 mph and 115 mph. C rates at a maximum of between 85 mph to 100 mph.
Is 300 tread wear good?
Treadwear is a government-required rating that is meant to tell consumers how rapidly a tire will wear down. In basic terms the larger the treadwear number the greater the tire’s lifespan. A tire with a treadwear of 600 should last twice as long as a tire with a 300 tread wear rating.
What temperature are winter tires good to?
Winter tires don’t like warm roads It’s the rubber compound, which is formulated to stay soft and pliable when temperatures plummet below 7 °C (46 °F). It’s very effective for mitigating the negative impact of cold temperatures and provides traction in winter conditions.
What does tire traction AA mean?
Traction. Traction markings indicate how well a tire will perform in wet conditions. The traction rating can be AA, A, B or C. AA is the highest level of wet traction and C is the lowest.
What temp is too hot for tires?
Most experts consider 195 degrees Fahrenheit as the “line in the sand” when it comes to tire temperature: Beyond that point, the temperature will start impacting tire life. At 250 degrees, a tire will start to lose structural strength, could begin experiencing tread reversion and the tire will begin to lose strength.
Is warm weather bad for winter tires?
Tires wear down quickly in warm weather Winter tires have soft tread compounds designed for winter use; in hot summer weather, they will generate an unnecessarily high amount of heat and increase the overall thermal load of the winter tire.
What is a good tire temperature?
Most experts consider 195 degrees Fahrenheit as the “line in the sand” when it comes to tire temperature: Beyond that point, the temperature will start impacting tire life.
Does humidity affect tire pressure?
The increase in tire pressure is due to two factors. The first being that during the summer time there is much more humidity and moisture in the air. This excess moisture can cause tires to swell.
Do tires wear faster in hot weather?
Also, the tires will wear out faster. Hot weather exacerbates heat build-up and weakens the tire, potentially leading to abrupt and sometime catastrophic failure.
What temperature should winter tires be?
Unless you live in Quebec (March 15) or areas of BC (April 30/March 31), use the 7 degrees Celsius rule to know when to change back to standard tires in the spring. If the temperature heads above 7 degrees, go to your automotive specialist for a changeover or possibly do it yourself if possible.
What temperature do summer tires stop working?
Below 45-degrees Fahrenheit, these summer and high-performance tires lose their performance because of the rubber compound of which they are made.
What is the difference between the treadwear grade and traction grade?
The Treadwear Grade rates how well a tire wears in comparison to a specific test tire. A tire with a grade of 300 wears three times as long as a tire with a grade of 100. While this test is a comparison, bear in mind that it is not how long a tire wears and results vary by manufacturer. The Traction Grade is the level of grip on a wet surface.
What is the difference between tire temperature and treadwear?
** Temperature: Indication of a tire’s resistance to heat. Temperature rating is graded from highest to lowest as ‘A’, ‘B’ or ‘C’. *** Treadwear: Indication of a tire’s relative wear rate.
What does traction rating mean on tires?
* Traction: Indication of a tire’s ability to stop on wet pavement. Traction rating is graded from highest to lowest as ‘AA’, ‘A’, ‘B’ or ‘C’. ** Temperature: Indication of a tire’s resistance to heat.
What is treadwear and how is it determined?
Each tire manufacturer independently determines treadwear through their own tests. Treadwear is not based on any one industry or government standard. The higher the number the longer the tire should last compared to similar tires from the same manufacture with lower numbers.