ST vs LT tires.
What is it about this subject that causes threads to close sooooo quickly? The last lasted 8 hours!!! before it was closed. So let's try this again, but folks - let's keep it civil. No name ...
Forum Discussion
Even our most experienced experts balk at disseminating the regulations leading up-to and including vehicle certification.
Toyo RV tire publications say it best. But, to reference that is to add kindling to the already burning fire. Those that really want to know will go and find it.
In the automotive tire world things are less complicated because the T&RA publish lists of suitable replacement tires for all vehicles. Even plus sizing has clear industry standards to follow for a smooth transition from size to new size. Complications arise when the decision making process is put into the hands of the vehicle owners.
Vehicle manufacturers have the sole responsibility for tire and rim fitments for your trailer as received from the factory. Unless you are some sort of engineer involved with trailer building, why do you question the trailer manufacturer's ability to make sound decisions about tire/rim fitments?
The trailer manufacturer cannot build a trailer, put tires/rims on it that have clearances for that fitment and then tell the owner they can use something else. To do that they must make a pre-decision about multiple fitments and publish those fitments in the vehicle's owner's manual.
The manufacturer cannot fit GAWR 5200# axles with 3000# load capacity tires and then turn around and tell you it's ok to use replacements with 2700# load capacities. In fact, no retailer will do it either, especially if they have to sign-off on the fitment.
Here is a common fitment many use when axle spacing has a small fitment window. Guff is what you get when you point it out. The LT245/75R16E tires have a minimum rim width fitment of 6.5". And what is the width of the rim you're fitting those tires to? And the installer says, "It'll work just fine". Hmmm?
FastEagle
Toyo RV tire publications say it best. But, to reference that is to add kindling to the already burning fire. Those that really want to know will go and find it.
In the automotive tire world things are less complicated because the T&RA publish lists of suitable replacement tires for all vehicles. Even plus sizing has clear industry standards to follow for a smooth transition from size to new size. Complications arise when the decision making process is put into the hands of the vehicle owners.
Vehicle manufacturers have the sole responsibility for tire and rim fitments for your trailer as received from the factory. Unless you are some sort of engineer involved with trailer building, why do you question the trailer manufacturer's ability to make sound decisions about tire/rim fitments?
The trailer manufacturer cannot build a trailer, put tires/rims on it that have clearances for that fitment and then tell the owner they can use something else. To do that they must make a pre-decision about multiple fitments and publish those fitments in the vehicle's owner's manual.
The manufacturer cannot fit GAWR 5200# axles with 3000# load capacity tires and then turn around and tell you it's ok to use replacements with 2700# load capacities. In fact, no retailer will do it either, especially if they have to sign-off on the fitment.
Here is a common fitment many use when axle spacing has a small fitment window. Guff is what you get when you point it out. The LT245/75R16E tires have a minimum rim width fitment of 6.5". And what is the width of the rim you're fitting those tires to? And the installer says, "It'll work just fine". Hmmm?
FastEagle
