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CWtheMan · 05-22-2019, 07:14 AM

There is a fallacy with the Goodyear Endurance designated size ST235/80R16 LRE. It has a maximum load capacity of 3420# at 80 PSI. Therefore, it is not qualified for service on vehicle certified 7000# GAWR axles.

Before 2017 when the RVIA 10% reserve load capacity recommendation kicked-in, Keystone had numerous vehicle certification label recalls because they failed to properly identify which load capacity tire they used on the 7K axles. There is a standard in FMVSS that says any tire with identical size designations having more than one load capacity in a load range field (LRE); the load range of the tire with the highest load capacity - 3520# - defaults to the lowest load capacity - 3420# unless the higher load capacity has been designated and documented with NHTSA as the proper fitment for that trailer. On those recalls Keystone took the easy way out and did the math and issued replacement labels certifying the 7K axles to 6750#/6800#. Then they always installed brand named tires with 3520# of load capacity on 7K axles and provided the necessary documentation to NHTSA to support that action.

Those of you with trailers having 7K vehicle certified axles with OEM ST235/80R16 LRE tires should never use replacement tires with less load capacity than the OEM tires provided, that includes the GY Endurance of that designated size and load range.

Here are two pictures I took at RV shows that show how Keystone did the certification labels to accommodate two of three different load capacities of the ST235//80R16 LRE tires. (The other load capacity is 3500# and is manufactured by just a couple of brand names. Kenda is one of them.).

http://www.keystoneforums.com/forums...pictureid=6376
http://www.keystoneforums.com/forums...pictureid=6377

Note: Another popular brand in that size with 3420# max load capacity is Maxxis. Carlisle is 3520#.

05-22-2019, 07:14 AM	#1
CWtheMan Senior Member Join Date: Feb 2010 Location: Taylors, SC Posts: 3,031	The ST235/80R16 LRE There is a fallacy with the Goodyear Endurance designated size ST235/80R16 LRE. It has a maximum load capacity of 3420# at 80 PSI. Therefore, it is not qualified for service on vehicle certified 7000# GAWR axles. Before 2017 when the RVIA 10% reserve load capacity recommendation kicked-in, Keystone had numerous vehicle certification label recalls because they failed to properly identify which load capacity tire they used on the 7K axles. There is a standard in FMVSS that says any tire with identical size designations having more than one load capacity in a load range field (LRE); the load range of the tire with the highest load capacity - 3520# - defaults to the lowest load capacity - 3420# unless the higher load capacity has been designated and documented with NHTSA as the proper fitment for that trailer. On those recalls Keystone took the easy way out and did the math and issued replacement labels certifying the 7K axles to 6750#/6800#. Then they always installed brand named tires with 3520# of load capacity on 7K axles and provided the necessary documentation to NHTSA to support that action. Those of you with trailers having 7K vehicle certified axles with OEM ST235/80R16 LRE tires should never use replacement tires with less load capacity than the OEM tires provided, that includes the GY Endurance of that designated size and load range. Here are two pictures I took at RV shows that show how Keystone did the certification labels to accommodate two of three different load capacities of the ST235//80R16 LRE tires. (The other load capacity is 3500# and is manufactured by just a couple of brand names. Kenda is one of them.). http://www.keystoneforums.com/forums...pictureid=6376 http://www.keystoneforums.com/forums...pictureid=6377 Note: Another popular brand in that size with 3420# max load capacity is Maxxis. Carlisle is 3520#.