Forum Discussion
noteven
Jun 07, 2021Explorer III
"ply" rating has kinda been replaced by load index 3 digit numbers.
118, 121, 124, 128 etc - lets you tell at a glance if the tire you want is in the capacity range. Then go to the mfg spec sheet and look at the single load rating.
All this specing and matching of tires starts with weighing your truck and trailer and tongue weight with and without weight distribution set up etc
Anyways - when I have set weight distribution too tight or used the wrong rating bars for the tongue weight, I've experience "bouncing" in the tow vehicle.
"Soft" tires - by this I mean underinflated or overloaded for their index - contribute to fluffy ride and more instability in the lateral plane vs the vertical plane in my experience.
But when I get a different truck or trailer or camper or whatever I start by a visit to the scale and get some weights recorded.
118, 121, 124, 128 etc - lets you tell at a glance if the tire you want is in the capacity range. Then go to the mfg spec sheet and look at the single load rating.
All this specing and matching of tires starts with weighing your truck and trailer and tongue weight with and without weight distribution set up etc
Anyways - when I have set weight distribution too tight or used the wrong rating bars for the tongue weight, I've experience "bouncing" in the tow vehicle.
"Soft" tires - by this I mean underinflated or overloaded for their index - contribute to fluffy ride and more instability in the lateral plane vs the vertical plane in my experience.
But when I get a different truck or trailer or camper or whatever I start by a visit to the scale and get some weights recorded.
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