Not a normal tire question... P or LT rated?

[FelixLeiter]

Looking at the Nitto Terra Grapplers (local tire chain recommended them for a good mix between highway longevity and off road prowess). The current boots are the stock Bridgestone Duallers which haven't held up so well--I attributed it to the P (passenger tire) rating on a fairly heavy vehicle (often loaded up for camping then driven 400-2500km to a destination)but don't really know for sure.

The Terra Grapplers come in P and LT ratings, the major differences are as follows:
Load rating difference of 700#
PSI difference
more $$ for the LT

I notice that quite a few of you run the Nittos, which rating did you choose and why?
Will the LTs give a longer life.
Are they more amiable to being run at low PSI while wheeling because of stonger sidewalls?

I don't mind spending the extra $$ but won't do it if it isn't for good reason.

 

[Brock]

I usually go for LTs but this past two times got P rated and have not looked back....they are 8ply tires...very well built....and think either will treat you right. The LTs are a bit tougher and able to withstand more abuse....so I would give an honest assessment of what your wheeling consists of on regular basis...

Here is comment from TIRERACK
Mark Richter, performance marketing manager for Yokohama Tire Corp., says LT commercial tires are designed to work hard all the time, which is why three-quarter-ton payload pickups generally come standard with 10-ply, Load range E tires.

 

[DEWFPO]

Like Brock said, the "P" rated tires will likely give you a smoother ride because the sidewalls are not as tough as "LT" rated tires. If you off-road, then LT's would be recommended for the better sidewall protection.

DEWFPO