Biggest tires on 5 lug

If I do the black box mod and put 2.75 inch leveling kit on what will be the biggest tires I can fit?

 

You need to provide the wheel spec too.

Lift isn't the magic. Wheel specs are.

Example. On OE 15" wheels you can go up to a 235 75 15. With NO modifications, no rubbing. And you get 1" of real ground clearance.

Keep in mind that tire diameters affect final gear ratios. Get it too tall and our 2.7s will get pretty sluggish.

 

Currently running 255/75/r17 with just the black box mod.

 

This ^^^^^^ I had a set of rims that were -44mm offset and my 33s couldn't turn but after switching to -13mm it was fine.

Tire size all depends on what you want to do with the truck and what you're willing to sacrifice (speed and rubbing). I tweaked my fenders from my tires smashing at full stuff.

Also do an eBay 3" spacer to maximize the lift.

 

The easy answer is 31/10.5/15. If you take out the black box and aren't opposed to shaving off a bit of plastic, you should be able to squeeze 31's.

 

265/70/r17, with readylift, not sure about the offset, but definitely need at least 1” spacers

 

Took off old 235 75R 15 on steel rims and replaced them with 31 10.5 15 on some old used aluminum rims. This is with the leveling kit, black box removal. couldn't take it home because the are going to align it. Can't wait to see how it rides.