Can a Trailer Tire be Ran at its Maximum Speed Rating for Long Periods of Time

Question:

If the max speed rating on the Karrier radial is 81 mph, should I go for a higher speed rated tire if I travel right at 81 consistently? In other words, if that is the tires max, should I be concerned about traveling at its max at all time?

asked by: Martin

Expert Reply:

No, the speed rating on trailer tire # AM10235 does not have a duration it can run at speed. The rating is given based on the construction but also other factors as well. The assumption is that you would creep over 81 miles an hour from time to time. You would want to keep it at or below 81 miles per hour though.

The key with trailer tires is to always inflate them to the maximum psi indicated on the tire. Trailer tires have a thicker sidewall than passenger vehicle tires. If under inflated the thicker sidewall can generate excessive heat and lead to failure.

expert reply by: Michael H