Quote:
Originally Posted by Cat320
This must be true, I found it on the internet:
ST tires have strengthened sidewalls to help prevent the tire from rolling under the rim in turns and when cornering. The majority of ST tires have a maximum speed rating of*65 mph.
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That's funny! In 30+ years of owning RVs and other trailers I never once found an ST tire rated for
65 miles per hour. The speed ratings that concern ST tires are M - 81 mph, L - 75 mph, and J - 62 mph. J rating was about the only thing you could get in a "consumer" tire with the others for commercial use. These days you get more choice. For example, the Sailun ST S637 tires that came on our current RV have an
L rating. Just because a tire can doesn't mean it should and I still tow in the 60-65 mph range. Old habits die hard I guess.