What do the letters mean on truck tires?
Letters ranging from A to Z represent the speed rating. Each letter denotes the maximum speed a tire can sustain under its recommended load capacity. In our example, “H” is equivalent to a maximum speed of 209 kph (130 mph). T and 102H are service descriptions. Load Index, what this means is, the tire is capable of carrying weight up to, 1,874 lbs per tire. The T and H are speed Ratings, this indicates that a tire is capable of speeds up to, 118 mph and 130 mph (respectively).
What does z or r mean on tires?
Zr shown on the sidewall of your tire is a reference to the tire’s speed rating. Historically, the speed rating zr on a tire meant that the construction of the tire could reach of 150 miles or 240 kilometers per hour. Today, a tire labeled zr, has more capabilities than before. For thrill seekers: zr tires offer unmatched performance for high-speed driving. For everyday drivers: r tires provide durability, comfort, and better value for daily commuting.
Are R or D tires better?
D tires are typically rated for a higher load capacity, making them ideal for heavy-duty trailers that carry substantial weight. On the other hand, R tires are generally designed for lighter loads and provide a smoother ride, which can be beneficial for recreational trailers. Because of their stiffer sidewall, LT tires don’t absorb bumps very well, causing more vibrations and road noise, particularly in lighter trucks and SUVs. That’s why we typically only recommend using LT tires on larger trucks, SUVs and vans, or for use in off-road conditions.LT tires also have extra material in the sidewall and under the tread that protects the tire from damage. In the other hand, LT tires won’t ride as smooth, be as fuel efficient or last longer than a regular P-metric (Passenger)tire.If you’ve got an appetite for off-road adventures or you regularly put your truck to work with heavy loads and towing duty, LT truck tires provide all the power and rugged durability you’ll need; but if your truck is primarily a commuter vehicle or city-driver, P-metric tires will make those trips more comfortable and .A tire size that ends with an LT means it’s a special kind of “Flotation Light Truck” tire that can also handle heavy loads and towing, but the tread pattern is engineered to prioritize off-road traction to “float” over sandy surfaces and loose sediment.
What is the 7 7 rule for tires?
So, when is the right time to swap? The rule of thumb is 7-for-7: wait until there are seven consistent days at 7 degrees Celsius. The reverse is also true for transitioning to winter. Ottawa’s CAA Members can avoid the tire swap lineups at on-site vendors and save money with our economical new Mobile Tire Change. The 7 7 rule for tires provides a simple temperature guideline for timing your seasonal tire changes. Install winter tires when daily temperatures drop to 7°C (45°F) or below for seven consecutive days. Remove them in spring after seven straight days above 7°C.
Which is better, H or T rated tires?
In the battle of T and H ratings, H is generally perceived as being better. H-rated tyres are effectively able to cope with 12mph faster speeds, can cope with greater friction at all speeds, and have significantly more capacity for heat resistance. AT tyres have a more aggressive and deeper tread than HT tyres, which gives them more traction for off-road driving. AT tyres are generally an ideal option for 4WD owners and weekend off-road enthusiasts thanks to their durability, longevity, and on- and off-road performance.