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Trailer tire speed ratings, represented by letters on the tire’s sidewall, indicate the maximum speed your tires can safely handle when properly inflated and under load. The ratings typically range from ‘L’ (75 mph) to ‘N’ (87 mph) for most trailer tires.
Tire Speed Rating Chart. To better understand the various tire speed ratings, we have compiled a comprehensive chart displaying the different tire speed ratings and their corresponding maximum speeds as per the United States tire speed rating system.
Common trailer tire speed ratings are generally between 65 and 75 mph and labeled as G, J, K, or L. If you cannot locate a tire speed rating for your trailer tires, it’s best to err on the side of caution and stick with the lower number. Check out this complete table of tire speed ratings to learn more about your wheels.
Today a lot of trailer tires are rated for 80 to 90 miles per hour. Though most trailer tires still have lower speed ratings than car and pickup truck tires. From an engineering standpoint, trailer tires are constructed with a price-conscious mentality. This helps keep the cost down to the consumer.
Tire speed rating indicates the maximum service speed for a tire. So, exceeding speed limits is not recommended by the tire manufacture. In addition, no indicator exists for how well the tire handles or corners. This rating provides a maximum speed capability of the tire with proper inflation.
Trailer Tire Speed Rating. Speed ratings note the max speed limit of a tire. While there are high speed trailer tire models available, most trailer tires will be rated for around 65 mph. The speed limit of the tires must not be exceeded. Driving faster will result in heat build-up that can lead to tire failure and blowouts.
The trailer tire speed rating chart follows a letter code system. You will see a letter ranging between A1 and Y on the sidewall of every tire. Each letter indicates a maximum speed limit, so you should not cross that limit while driving the vehicle.
Most boat and utility trailer tires have this speed rating which is a maximum of 75mph. M & N. An M indicates the tire has been approved for speeds up to 87 mph (140 km/h) and an N is approved for speeds up to 81 mph (130 km/h) under optimal conditions. You’ll find M and N ratings on tires for temporary use like spare tires. P.
Most trailer tires’ maximum speed ratings check in at 65-mph. Running a 65-mph-rated tire 75-mph down the highway can increase its inflation pressure as much as 10-psi without the trailer seeing any increase in load.
Tire speed rating is the top speed a tire can safely keep over time. View our tire speed rating chart and visit your local Tires Plus to learn more today!