I always fill my tires to 65 (max rating) for trips. Once it got cold I did get a large drop in pressure. Use a TPM to watch pressure and temp while towing....will alarm if mins or max exceeded. So far...so good.
I thought I read here somewhere that lowering the pressure in tires reduces towing integrity and risks tire issues and safety. Obviously..over inflating is a problem.
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Chris and Patty
2015 Keystone Montana 3791RD Legacy Edition, MorRyde 4000, Dual pane windows, Goodyear G rated tires.
2013 GMC Sierra 3500HD, Duramax, SLE, SRW, Crew, Hensley Trailer Saver hitch, Blue Ox BedSaver.
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