need new tires
I'm in need of new tires, leaning towards goodyear endurance, but spendy. Also considered carlisle and maxxis. Just wondering why I never hear anyone or read any article about firestone st tires. Any...
Forum Discussion
(quote)Frankly, were I to go ahead and go to an E tire, I'd only drop them to 70, as I feel that you start to get into underinflation territory below that. Tire wear and contact patch suffer. Now, were I going onto the sand at Pismo, that'd be a whole nuther subject. (emoticon)
Lyle (/quote)
70 psi would be better than 65 psi.
Not knowing the trailers load per tire I would do some chalk line across the tread system to double check those minimum tire pressure chart numbers. Remember those numbers are a minimum and doesn't cover the needs of a tire on a trailer and the tires interply shear affects.
Going from the D to a E tire has the advantage of a stiffer tire which at 80 psi its doing a better job of holding the tires plies together than at 65 psi when making those tight turns.
Roger Marble (Tireman9) a actual tire engineer talks about shear forces in tires on trailers. If a person would spend about a week and read all he has written on this subject you will see the reasons experienced RVers and tire experts/trailer blogs/Goodyear tire/others all recommend max sidewall pressures....unless some one has severally over tired the trailer.
http://www.rvtiresafety.net/2013/11/interply-shear-and-other-techno-babble.html
Lyle (/quote)
70 psi would be better than 65 psi.
Not knowing the trailers load per tire I would do some chalk line across the tread system to double check those minimum tire pressure chart numbers. Remember those numbers are a minimum and doesn't cover the needs of a tire on a trailer and the tires interply shear affects.
Going from the D to a E tire has the advantage of a stiffer tire which at 80 psi its doing a better job of holding the tires plies together than at 65 psi when making those tight turns.
Roger Marble (Tireman9) a actual tire engineer talks about shear forces in tires on trailers. If a person would spend about a week and read all he has written on this subject you will see the reasons experienced RVers and tire experts/trailer blogs/Goodyear tire/others all recommend max sidewall pressures....unless some one has severally over tired the trailer.
http://www.rvtiresafety.net/2013/11/interply-shear-and-other-techno-babble.html
