I have seen several references to adding max air to your tires when towing to reduce sway. I have LT rated tires and keep them at 35psi but I think 65 psi is the max...didn't go out in dark to look. Is adding max air normal and safe, and if you do add do you reduce it when you drop your trailer?
Family of 6 in KC, Missouri
2000 Suburban 6.0L 4:10 gas 2500 4x4
2002 ForestRiver Wildwood 28 ft. 26BH
McKesh Mirrors, Tekonsha Prodigy
Agree with Fulltimer, and, filling them to max psi also helps cut down on sway and gives better over all control of the rig. I do the same...50 when not towing, and 65 when towing, for my tires, your specs may vary; check your sidewalls.
armadillo,,,i totally agree with you...when i bought my new 1999 dodge the tag on the door said 65PSI for 8ply tires but the truck came with 10 ply E tires....the dealer put 65# in them....the truck rode kinda rough in my opinion...when i hooked up my fiver to the truck i put 80# in all the tires...the max on the sidewall...a booklet from michelin that came with the truck recommends adding 10# OVER the max when carring at the top load....i did not do that but believe it or not, the 80# as opposed to the 65# actually made the truck ride smoother...i was very disappointed in the 44000 miles i received from the michelins...I purchased another brand with a tread wear warranty of 80000 miles this time around and the new dealer put 65# in the darn things...i have about 2500 miles on them and they do ride ok but am gearing up for the summer so plan to put 80# in each tire....once i go to 80# i do not let any air out to go back to 65#....the cummins dealers computer shows i run loaded 32% of the time since the day the truck was new and averaged 12.464 MPG....not too good IMO.plan to do some engine additions to increase fuel MPG
Last year on our annual trip out west 3 tires on the 5er literally exploded. Thinking that the tires were faulty (even tho they had less than 15k on them) I replaced the remaining 4 tires (3 on ground and spare). However, upon our return home I went to a friend of mine that has been in the tire business many yrs and spoke to him about this. After a rather lengthy Q&A period I learned that tire mfgs recommend that tires never be inflated to less than 15% below max (side wall value) that less than this the tires temp rises exponentially which is a major cause of tire failure.
If a lower pressure with resulting softer ride is desired it is often possible to go to a different size tire that has the same load rating but at a lower max inflation pressure. Happy Trails
'05' F350 PSD 4x4 DRW CC, Lariat luxury group,torqueshift 5-speed auto,13k GVWR/26k GCWR,Tow Boss Pkg (4.30 LS axle),Tow Command Sys (trlr brk control), adjustable brake and fuel pedals, Mag Hytek tranny and diff covers, EGT,tranny and diff temp gauges,98 gal crossbed Transfer Flow fuel tank and Mobile Suites 36CK3 5th whl w/TrailAir pin box and centerpoint susp.
RET USMC;NRA Lifetime endowment member
Ive wondered that myself. I know about adding the max psi as listed on the sidewall. But what about when towing empty? What is the lowest PSI you should go to, and is there a general rule for how much psi you should per so many pounds? By the way, my tires are Goodyear Marathon radials, "C" load rating, with a circled "S" thank goodness.
1989 Sunline Saturn 16' T-1661, Reese WD hitch
2000 Haulmark Cub 5x8, Pontiac alloy wheels
Both w/ Carlisle Hydrastar & custom disc brakes
1992 Pontiac Trans Sport SE, Tekonsha Envoy
1990 Pontiac 6000 SE Wagon, custom snowplow