Tire Speed Rating Question
I'm posting this here because the speed rating of a tire seems to me to cross all lines/types of vehicles. Reading up on warranty issues/questions just now, I came across the following language ...
Forum Discussion
wny_pat wrote:full_mosey wrote:FastEagle wrote:Think
The correct answer is to use the recommended air pressure value found on the tire placard.
FastEagle
Footnote: If the inflation pressure corresponds to the actual tire load according to the tire manufacturer’s load and pressure table, the tire will be running at 100% of its rated load at that pressure. This practice may not provide sufficient safety margin. Any air pressure loss below the minimum required to carry the load can result in eventual tire failure. (Toyo RV tires)
Aren't you saying that the only approved way to travel with ST tires is to stay under 65mph?
The TT tire placard says NOTHING about speed. Why can't I drive any legal speed?
HTH;
John
You guys are mixing apples and oranges here!!! Toyo only makes commercial trailer tires, nothing smaller than 17.5". They are not a ST tire, but a "Trailer Position" catagory tire listed under their Medium Commercial Truck tires.
And both commercial trailer tires and ST tires have speed ratings. Just look at the tire specs!
Sorry I took that statement out of context. It is the stance Toyo takes with any tire aired in such a manner. Airing tires to the heaviest loaded tire puts a lot of trust in the air pressure measuring equipment.
FastEagle
Footnote: "If the inflation pressure corresponds to the actual tire load according to the tire manufacturer’s load and pressure table, the tire will be running at 100% of its rated load at that pressure. This practice may not provide sufficient safety margin. Any air pressure loss below the minimum required to carry the load can result in eventual tire failure." (Toyo RV tires)
