[onewhippedpuppy]

Originally Posted by berettafan

you can absolutely get a smoother ride with P series tires on a truck. tundras come with P series tires even!

not sure they'd be safe for something as big as the Excursion if it ever was loaded down or towing something big.

in any event I don't think P series vs LT E rated is gonna get you from 'excruciating' to 'not bad'.

Having gone from P to LT on several trucks due to towing needs, it's not a substantial change but you can tell a difference. Normally E range tires have a thicker sidewall, stiffer sidewall, thicker ply arrangement, and can take higher psi. They are typically quite a bit heavier than a P tire which would also hurt your handling (and MPG). You can still somewhat help the ride by airing down, I run 40 psi over the summer when towing my boat and bump it down to 35 psi in the winter when I'm not towing. It removes a little of the nervous jiggle that my truck gets in the back end when it's not loaded.