Originally Posted by 06SuperCrewF150

2006 4x4, 2.5" level. Put new BFG KO2s, 275/60r20, on 2 months ago, factory wheels. Looking to put 20x9 Fuel wheels on. One sales rep said to stick with +20 offset because +1 will cause alot of trimming. Other places have said the +1 wont be a problem. What's the group opinion here? Holding off on the purchase button until I hear back.

Originally Posted by 06SuperCrewF150

2006 4x4, 2.5" level. Put new BFG KO2s, 275/60r20, on 2 months ago, factory wheels. Looking to put 20x9 Fuel wheels on. One sales rep said to stick with +20 offset because +1 will cause alot of trimming. Other places have said the +1 wont be a problem. What's the group opinion here? Holding off on the purchase button until I hear back.

Originally Posted by LovetheTide

This is for 2004-2008.

On a stock truck without leveling kit you can run 33X12.5" tires if it is a 4WD and 31X12.5" tires if it is a 2WD, using stock wheels.

On a leveled truck(2" kit and larger) you can run 35X12.5" tires on a 4WD and 33X12.5" tires on a 2WD truck, using the stock wheels.

Using aftermarket wheels you can run 35s on a 4WD if the wheels follow these guidelines:
-For an 8" wide wheel the backspacing is 5.5 inches.
-For and 8.5" wide wheel the backspacing needed is 5-6 inches.
-For an 9" wide wheel the backspacing is 4.5-5.5 inches.

If the wheel specs are not listed about you will more than likely have to run 33s or even smaller to avoid too much rubber and trimming. These specs are the basics for tires fitting well but you could run 35s if the specs are very similar but you will face bad rubbing.

For a 2WD truck and after market wheels you can run 33s with wheels that fit withen these specs.
-For an 8" wide wheel the backspacing is 5.5 inches.
-For and 8.5" wide wheel the backspacing needed is 5-6 inches
-For an 9" wide wheel the backspacing is 4.5-5.5 inches.

If the wheel specs are not listed about you will more than likely have to run 31s or even smaller to avoid too much rubber and trimming. These specs are the basics for tires fitting well but you could run 33s if the specs are very similar but you will face bad rubbing.

Remember that these are the basics to running aftermarket wheels and tires, certain tires might not rub but others might because of aggresive sidewalls.

These specs should work for most people and instances but if you are worried about fitment get the tire shop to mount the tire on the wheel and put it on the truck then turn the wheel to full lock in both directions to see and possible problems. If the tires you plan on running aren't 12.5 inches wide you still might be able to run 35s because of that reason, for a 4WD and some aftermarket wheels or 33s for a 2WD. It's best if you can find wheels that are a happy medium between the two backspaces for the 8.5" and 9" wheels because you will face more rubbing if you go for 6" of backspacing on a 8.5" wheel instead of 5.5 inches that's right in the middle.

For those who are curious. The stock wheels(17 and 18") are 7.5 inches wide with 5.5 inches of backspacing. The bolt pattern is 6X135mm.

Big thanks to PawPaw on this one.

If you have any instances where you find that these specs haven't worked for you please let me know and I'll make the appropriate changes, please PM so I will see it.

Hope this helps.

Originally Posted by JTstringfellow

if i wanted to put 35x12.5s on stock 2004 18s with a 2.5” leveling kit, how bad would it rub?

Originally Posted by rugtnit

I have a 2006, I put an Autospring brand 3" leveling kit on it and wrapped the factory wheels with 35x12.50/18's. I also put on 2" wheel spacers for widened stance look. I had rubbing on the front valance and rear part of inner wheel well liner. I solved the problem be taking a heat gun and softening the bottom corner on the valance and reshaped it inward and up to remedy that rub and with the well liner I located the general area of the rub and softened and pushed backward to create a dented cavity. The only rub I have now is driver side full lock to left in reverse... and that's only because I have BFG TA/KO's and the edge of the outside grip rubs my mudflap. I think I posted pics of everything so look back at my posts. Good luck.

Originally Posted by juanster1991

Hello everyone i have a question regarding tire fitment on my f150. So i have a 2006 f150 xlt 5.4 4x4 bone stock and I installed some oem 20” rims off of a 12th gen (2012). It currently has 275/65/20 all terrain tires that need to be changed. It has a slight rub on full turn and I want to install some 295/60/20 nitto terras. What do you guys think about it?, should i get a 2” level?. Thanks for any replies.