Rim and tire specs ( wheel specs )

Hey there , does anyone have the specs of the OE tire and wheel for the LT model?
I used to have an LT and loved the way it felt on the road . Once I got the RS I felt more bumps on the road , assuming because of the less tire sidewall and more wheel .
yah know since they are 17s on the RS and not 16s like the LT

anyways would anyone know the OE specs of the rim itself and the tire itself? FROM THE LT MODLE .
Thanks .
Starr