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chrispitude's avatar
chrispitude
Explorer
Jun 23, 2018

Looks like 30psi ought to be plenty good for towing

Well not really, but no wonder there is so much confusion on the topic! I have a 2006 GMC Yukon Denali XL with the factory tow package. I'm getting things set up to tow a 2019 Jayco X23E, which is ...
mike-s's avatar
mike-s
Explorer
Jun 23, 2018
P275/55*20 is good for 2216 lbs per tire at 29 psi. So, about 4500 lb on the rear axle @30 psi. What's the RAWR? If less than about 4500 lbs, more pressure won't get you more capacity. And, I'll bet it's right around 4500 lbs - manufacturers spec tires and pressures to support the ratings they give. If the sidewall max pressure allows it, I might run an extra 5 psi when towing, but not more for treadlife.

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