dry truck weight

Dayle1 wrote:
Another question to Ford owners, why does the sticker on the door post list max. inflation of 65 psi? Tires are LT275/65R20E and that is the tire size shown on the sticker, but Ford says both front and rear should be inflated to 65 psi even though the tire sidewall states 80 psi. So my friend has been using 65 psi further over stressing the tires. My GM sticker shows 55 psi front and 80 psi rear.

Thanks

Tire manufacturers rate the tire pressure to be that needed for the tire to carry its maximum rated load. They don't know what vehicle it is on or what it will be carrying.
OTOH the vehicle Manufacturer knows those numbers and lists the tire pressures needed for when the truck is loaded to GVWR.
IOW the vehicle label over-rides the tire sidewall.
Your friend using 65psi is NOT stressing the tires, they do not need to be inflated to 80psi UNLESS they are carrying their maximum rated load.