I am having a 6" fabtech lift installed on my 2010 f-150. I will have 35x12.5 trail grapplers on a 20x10 wheel. I will also have bushwacker pocket flares installed. I am wondering what backspacing/offset i will need if I want the tires to extend 1" past the flares. The guys at the tire shop didnt seem to have a clue, any help will be greatly appreciated

 

are you doing the 1.5" coverage or the other ones. Bushwacker makes two different sizes with the pocket flare style. You are probably going to want 4.5" of BS at least. I cant tell you how far they will stick out, but id say it may be close if you go with the smaller of the two pockets. I have some pics of my wheels in my gallery. they are 9" wheels with 4.5" of Backspacing or -12 offset. then just figure another inch to give you an idea.

 

What is the backspacing on your wheels? If it's 4.5, the wheels with stick out 3.5 inches farther than your stock wheels.