View Single Post
  #6  
Old 01-05-2014, 10:18 AM
TJC.geotech TJC.geotech is offline
Dodge Ram Forum Senior Member
 
Join Date: Oct 2013
Location: Ottawa
Posts: 442
Gender: Male
Vehicle: 2014 Ram 1500 Crew
Trim Level: Big Horn
Color: Granite
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 2
Rep:114
TJC.geotech will become famous soon enoughTJC.geotech will become famous soon enough
Default

You should not run an e-rated tire at 40 psi. They are designed to be inflated to 60~80 psi. Low inflation pressure is the number one reason for tire failure. This is how Ford and Firestone got into so much trouble with the Explorer.

An 18" E-rated tire at 60psi would probably feel very similar to the factory P rated 20" setup. Firm but not harsh.

Going to an LT tire will take some of the sway out of the truck, but you will still be limited to the axle rating of the truck. The axle becomes the weak link and believe me, you do not want to break an axle towing a trailer. Some prudence and common sense is required here.
Reply With Quote