I agree that no tire manufacturer is going to say different than what GM recommends (liability and all) but since I have different tires and wheels than were OEM I don't know what that recommended number by GM is...
I have seen the OEM optional 20" tire and wheel placard that recommended 32 PSI...
I have a 2005 GMC Yukon Denali and recently switched from the OEM 17 inch wheels and tires to 2024 GMC 20 inch wheels and tires...
When I ran the 17's I had tire PSI at 36 rather than the door placard recommendation of 30 PSI...now with the 20" wheels and tires I don't know the recommended...
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