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Maybe 2 1/2 is if your trailer sits on them for months at a time, outside in the sun. Mine are at 3 years and I'm contemplating putting new ones on, even though we tow our rig once a month. Changing tires is not fun and worse is if your tire grenades and destroys the side of your trailer.........had that happen about 15 years ago on a Thor Jazz 5th wheel.
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2019 Keystone Montana 3560RL, 2020 Chevy 2500 HD, Firestone airbags, Air Lift wireless compressor, Curt gooseneck, 20K Reese Goosebox, TST-507, USMC combat vet & retired LEO. Robert, Anika, Breanna, Dylan (daughter-in-law Stephanie). & our Great Pyrenees Layla
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