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My 2019 Bighorn came with 275/65R/18 wheels I have a set of 275/55R/20 Laramie wheels as per the description and picture The load sticker has the psi for the 18 inch wheels at 36 psi Using the tiresize.com calculator it changes the tire pressure to 41 psi...
5thgenrams.com
There are other variables. 5th gen members also pitched in with their psi.
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