Can I run 31x12.5 on these Wheels?

going with 31x10.5. Most people saying that, and saying ill lose to much power with 32x11.5.

Just hope its not to small.

your not losing too much power, you don't have much to begin with.

if you do a white version of that maroon truck, you will have done well.

ps. please no chrome nerf bar. less is more. remove the black side moldings, the moldings on your bumper, the red pin stripe, and the emblems on the tail gate. billet grill. 4300k HID's. take that bitch out the oven cause she's DONE!
 
Find out what gears you have, look in your glove box for the codes GT4, GU6, GT5, GU4, etc. gt4=3.73, gu6=3.42, gu4=3.08, gt5=4.10.