Can't tell from the video, but it would also help if you tried to launch it on concrete. I'd say 20psi, longer burnout...until they "chirp" at the end of the burn out as you're letting off, and then back up into the burnout patch on concrete and try it. The track starting line is waaaay stickier. You got a bunch of gear @ 4.56 to only be running a 28" tire. I think a 295/65-15 ET Street Radial would be your best bet. Part#3762R. They don't make a decent tire size in 17's, but you shouldn't have a problem finding a 15" wheel to fit your truck, except that you gotta buy some

Other than that, the truck LOOKS and SOUNDS fuggin' killer!!!

 

you will have to do a better burn out than that to heat them up and put about 18psi in them a i bet they hook

 

i have the same tires.

22 psi and do a burn out until they hook dont stand in same spot. power break it just to spin then let go of the break and mash on it until they hook up. and they should be fine.