I'm just leary of any ST (China made) tire. I had a failure on a travel trailer in 2nd season and checked them prior to each trip for proper pressure and never traveled over 65mph. On 5th I had failure start of 3rd season. By that time I felt like a tire expert and also added TPMS and checked every couple of hours on road for pressure and temp. and still had failure. Also learned that if one fails you can usually expect the second one on same side to fail in 100 miles so I carry 2 spares and when one fails I change both. Both failures were from belt shift (lousy manufacturing).