07 F150 XLT 4x4 6 in fabtech lift and aal

I had Discount Tire order me a Eagle Alloy 64 series 20 x 10 with -21 offset rim in for a test fit. It finally came in and it stuck WAY out, It looked like it was an easy 3-4 inches out (could be off a bit didn't measure). I have seen on these boards some 20 x 10 rims that have the exact look that I am going for, but I need some help getting there. All the wheel shops keep giving me conflicting answers. I am so confused.

What kind of backspace/offset do i need to get to get the right look? What I consider the right look is like 1-2 inches past the fender.

 

Check with your suspension lift instructions, I believe the most backspace you will be able to go with is 5". A 20x10 with 5" backspace will set your wheel around 2" further out than a stock 20x8.5. I believe the suspension system is going to widen your track by 1.5" or so, so with a 20x10 with 5" of backspace, the most you can have, your wheels will be out 3.5" from stock, which will put you about 2.5" outside of fender.

 

So instead of going with a 20 x 10, I should look into 8.5 or 9s?


If I went with a 8.5 then I would stick out about an inch past the fenders, and a 9 would be 1.5 inches? Is that correct?

 

Using the same 5" backspace as a guide, that should be correct. Another thing to consider when choosing a wheel width is the width of the tires you want to run. You should be ok with a 9" wide wheel up to 12.5" tire width, any more than that you should go with the 10".

 

I was thinking about running terra grappler 325/60/20


Also can i still go with a 12.5 wide on a 8.5 rim?

 

That might be pushing it on a 9" wide wheel, I know there are plenty of guy's here running 325's on their stock rims, just not sure what type of wear their getting. Running an excessively wide tire on a narrow rim is going to give you a balloon effect on your tires which will cause the centers to wear quick, also you decrease the amount of contact area. Hopefully someone else can chime in with a similar setup.

 

Your OEM wheels were either 17x7.5's or 18x7.5's with 5.5 inches of backspacing. THe OEM 20 inch wheels are 8.5 inches wide with 5.5 inches of backspacing. So, use this as a guide when choosing your wheels. Try to stay close to the OEM 5.5 inches of backspacing. Odd's are the 20x10's you looked at had only 4.5 inches of backspacing which means they stuck out 3.5 inches farther than the OEM wheels. You can easily run the 325/60-20's on a 20x9 inch wide wheel with no problems.