My GY Marathon experience
I have always read the various debates & arguments over the Marathon tires and was mostly neutral and not sure what side of the fence to be on. That has changed. I always kept the tires covered, psi...
Forum Discussion
What was the date code on the new Marathons? What is the actual scaled weight on the tires? What is the reserve load capacity of the tires? Is the TT heavier on one side as determined by going to a scale?
When it comes to ST type Marathon tires, besides maintaining the psi, you also cannot tow overloaded or over 65 mph. Internal heat buildup from being overloaded, under-inflated and/or towing over 65 kills ST tires. Also should not hit potholes or speed bumps hard at speed, should stay off road shoulders and never "curb" the tires. Without knowing if all the ST "rules" were followed, the tires shouldn't be automatically blamed.
Some of the tires I've seen on Keystone TTs have little reserve load capacity (same with axles). You want 15% or more. Going to one load range higher can help a lot. When replacing tires, should include the spare. When tires get to 5 years old or 6 years max., they should be replaced even if they look new. Make sure tires are fairly new per date code and not old stock laying around for a couple of years. Having a TPMS is a good idea.
When we bought our TT we opted for their LRD Marathons (standard was LRC). They're now 4 seasons old and have about 20K miles on them and have had no issues. Will be replacing them at the end of the next season with GY Endurance. There's a lot of Marathon owners that have had many miles on them and long service life without issues. There is no doubt tho. that some Ch*nese made ST tires are poor quality.
When it comes to ST type Marathon tires, besides maintaining the psi, you also cannot tow overloaded or over 65 mph. Internal heat buildup from being overloaded, under-inflated and/or towing over 65 kills ST tires. Also should not hit potholes or speed bumps hard at speed, should stay off road shoulders and never "curb" the tires. Without knowing if all the ST "rules" were followed, the tires shouldn't be automatically blamed.
Some of the tires I've seen on Keystone TTs have little reserve load capacity (same with axles). You want 15% or more. Going to one load range higher can help a lot. When replacing tires, should include the spare. When tires get to 5 years old or 6 years max., they should be replaced even if they look new. Make sure tires are fairly new per date code and not old stock laying around for a couple of years. Having a TPMS is a good idea.
When we bought our TT we opted for their LRD Marathons (standard was LRC). They're now 4 seasons old and have about 20K miles on them and have had no issues. Will be replacing them at the end of the next season with GY Endurance. There's a lot of Marathon owners that have had many miles on them and long service life without issues. There is no doubt tho. that some Ch*nese made ST tires are poor quality.
