i have a 2006 fx4 5.4L with OEM 20's. i have been told that they are 8.5" wide, and have +38 to 40 mm of offset. I do not know the backspacing. Is the offset and the backspacing the same thing?

Ive been looking at some new wheels (mkw m26) and found some I like that are:
Size: 20 x 9
Offset: 30
BackSpacing: 6.18
Hub bore: 87

Tire: 33 x 12.5 x 20 toyo open country mud terrrain

Can you guys tell me how wide from the front/back fenders they will stick out (or will they) or how much wider than my stock wheels now?

 

I believe the backspacing is 5.5 inches on the OEM 20's. So, those should stick out about the same as the OEM 20's.

 

so basically not what i am looking for if i want my tires to stick out about 1-1.5".....?

what would i have to do to get them out? wider wheels?

 

Either a wider wheel or one with less backspacing. A 9 inch wide wheel with 5 inches of backspacing (which is very common) would stick out an inch farther than the OEM 20's and 2 inches farther than the OEM 17 and 18 inch wheels.