Once you change/remove the factory tires I don't believe you should go buy the recommended tire psi found in the owners manual or inside the door jam. Tire sidewall would be more applicable for tire psi.

 

wow! high pressures.... my tires wear like iron with 30 rear and 40 front empty. the lines on the tires are the basis for my pressures.
since my retirement, i don't haul any weight other than pulling a small trailer with my ATV's

 

I've always found the pressures on the door jam and tire to be way too high for a comfortable ride on a truck.
Always figured they were the ratings for full load.

 

I have E rated TOYO M/T's. When they were installed they set them at about 40 psi front/rear. I thought that was way to low. After watching them wear and how they felt, I slowly upped the pressures to accommodate the best ride and wear for whatever I was doing. Currently, running empty I have around 70 psi in the front and around 50 in the rear. When I tow my 5th wheel, I have 80-85 psi in the rear. Seems like everyone has their own preference.

 

Bill...What tire pressure are running on your 95 3500 hauler??

Been running 65 front and 50 back...

 

This isn't meant to hijack the thread topic but I think that shocks will play an important role in relation to tire pressure and ride quality. I can dial my Rancho 9000's to the softest, or softer settings, and lessen the harsh ride depending on the air pressure. With 70 psi in the front tires, the truck is surprisingly soft riding. And thats not a plug for Rancho's either but just noting that if I forget to air down the rear tires and turn the shocks to the softer setting, I might as well be riding on solid tires. Point I guess I'm trying to make is, the stiffer the shocks, the more jarring will be transmitted to the cab from higher pressure in tires.

 

true, I notice that off road vibration in my CTD is much less with my new bilstien 5100's that what it was with the old rusty things the previous owner had on it. As for sidewall flex, I use low PSI for rock crawling on my Toyota and with 15 psi in the tires the amount of sidewall flex makes it ride like im on jello-- super smooth on 6" pit mine gravel.

 

When using my goose neck hauling 25k I use 65 front, 80 rear.

 

.............I put the Michelin LTX A/S LT265/70R17 on my 01 quadcab long box and run 80 psi front and rear 24/7 365 days a year whether its -40* or +100*F.......wearing excellent with a nice smoothe ride........45,000 miles on them so far............kim........

 

I haven't ever found a tire that can equal a Michellin. They are pricey, but worth the money.

 

ive heard ppl swear up and down about michelins but could never afford them.
the size i mentioned is still within the 3% margin. it doesnt even show on the speedo. the popular front tire pressures mentioned here are the same as those listed in the booklet supplied by the manufacturer. but with anything made by anybody, it is always up to the end user to determine what works best for them.