I have a 2008 f150 flareside. I want to max the tires out and possibly put 20" rims on it as well. I plan to level the front. I believe 30" is the max but I don't know what the exact dimensions are to start shopping. I am putting nitto terra grapplers on it. Someone help?

 

2WD or 4WD? The stock tires are around 30", so that's a given. For the most part, 33's will fit with a leveling kit on a 2WD and some 35's will fit with minor rubbbing trimming on a 4WD w/leveling kit. I run 285/60/R18's Terra Graps and have no issues, but it's only a 31.5" tire on a stock suspension. Looks fine to me.

 

Need to know the specs on the wheels too, both width and backspacing/offset. Wheel choice could limit the tire size from what can be done with stock wheels.

 

I'm running 305/60/18's on stock rims. 2008 F150 4x4. runs good no rubbing and gives it a nice stance.