those tires are huuuuge. I don't thing they with fit in the wheelwell without rubbing the leafspring.

 

They aren't as big as you might think. This guy has them on the racestars. I'd just prefer a wider wheel if I could find one for a decent price.
https://www.performancetrucks.net/fo...estars-532356/

 

Did you figure out a wheel/tire setup? I need to do the same thing for my truck.

 

That 9.5" might be good for you, I have a 4/6 drop on my truck and with my previous tire which was a 305/45/18 on a 18x8Wheel it rubbed on my fender quite a bit. I'm thinking with a 29.5 tire and a 12" rim you may be getting awfully close to doing the same. The smaller the rim the less tread width there is and that could help you out in this instance for clearing. I just tried to get a 29x11x15 Hoosier slick on a 10" wide rim out back and it wouldn't fit due to the leaf springs ( learning moment for me) but I didn't even get a chance to try and lower it on the 29" tall tire to see the clearance but I know from what I saw it was awfully close.

Hope this can help some

 

Check out my pic in the build thread. Those are 390 M&H's on 17" Racestars on a 4/6 drop - I borrowed them from Fastjweb for a picture. They clear the leaf spring by about 2 inches, but could possibly require some fender trimming/rolling depending on how much suspension travel you have: https://www.performancetrucks.net/fo...513440/page13/

 

I ran 275/50/17 m&h tires on my factory 17" wheels and they worked great.

 

My truck only has drop shackles with the 305s but the are on factory 18s so the offset is pretty deep and the wheel is only 8.5 wide. They would tuck if the truck was slammed