I'm looking at some Pro Comp 20x9, 6.25 inch BS and 32 mm offset. Will be mounting 305/55 Nitto TG's . Oh yeah, truck is 08' F-150 4X4 with 2" level. Whaddya think??

 

Yes. They will stick out about 1.25 inches farther than the OEM wheels.

 

I would then presume that if I have no rubbing issues now with the OEM wheels, I won't have any with the Pro Comps???

 

Depends on the tire size you're running. The OEM 20's are 8.5 inches wide with 6.5 inches of backspacing and the OEM 17's and 18's are 7.5 inches wide with 5.5 inches of bs.

 

but this backspacing stuff is close to rocket science.... for me at least!

The tire size I'm running is 305/55/20 (Nitto TG's) currently on OEM wheels. No rubbing issues although there is not a lot of room to spare between the tire and the upper control arm.

My feeble mind says that if the wheel is 1/2 inch wider but it sticks out an 1&1/4 inches farther that the diff is a wash (with respect to the control arm) and there should be no problems. But something also tells me that the fact that they stick out farther really means nothing, it's the difference in the backspacing that's the critical factor. I'm probably all wet here, please clarify if you can. I don't want to purchase these wheels and find out I'm they won't work. Thanks again

 

I was wrong. Those wheels are only gonna stick out about 3/4 inches farther than your oem 20's. The slight decrease in backspacing is gonna move the tire a little farther away from your ball jont/control arm. You will be fine with the combo you have chosen.

 

Based on your response I feel really good about making the order! I will post pix when everything is mounted