Looking at Terra Grapplers would there be a noticeable difference in ride between LT tires vs P rated tires? Got the OEM Goodyears on my 10 F150 4x4 now. The air pressure is quite a bit higher

 

LT tires require a higher psi due to stronger sidewall and tread construction. The trade off is that you lose the 'soft' ride characteristics of the P rated tires. It all depends on what you will be doing with your truck ie: heavy loads or towing, also doing off roading often. I have a set of the Terras on my truck with the P rating and the ride is nice using the 35lb recommendation.

 

Yah its basically going to be a road truck. What size are those on your truck? How about wheel size?

 

Nothing special, they are 275/65-18 Terra Grapplers, pretty much stock size. Wheels are the XD Monsters 18X10