Thanks for the link on the Wheels.
I am working on putting together something similar.
I am thinking I want to stay with the P-metric class (4-ply) tire to try and maintain current fuel economy and a smooth ride, possibly could turn out even smoother riding then the OEM tires since there will be at least 2"s more side wall .
This is the Tire I am looking at, same demnsional spec as the LT-ATKO
Size: P285/70R17
Sidewall Style: Outlined White Letters
Serv. Desc: 117T Load Index 117 = 2892lbs (1315kg) per tire
Speed Rating “T” = 118mph (190kph)
UTQG: Treadwear: 480
Traction: A
Temperature: B480 A B
I have made upgrades like this in the past to other vehichles, and generally a LT 10ply Load range E, can be a bit on the rough side, for comfort, and the added weight of a 10ply tire (rotating mass) can reduce on road performance and fuel mileage. Also some TPMS systems trip pressure warrnings for to much pressure as well as to low. A load range E has a very high recomended pressure range. These are typically a 3/4-1ton truck tires, designed to run 50-80psi for carring heavy loads. A 10plytire can be good for extream offroading do to the heavy ply's are more puncture resistant.
http://www.tirerack.com/tires/tiret...ack.com||S|b|6698650813&techid=55&index.jsp=&