https://www.ford-trucks.com/forums/9...ml#post9218916

Stewart

 

Yeah, please read the various threads. If your wheels are rubbing just going straight then you have a real safety problem; sounds like you did not buy spacers to accommodate the significant (almost 2") difference in offset between the Excursion and the new-truck wheels..

I am using 2" aluminum spacers from Wheel Adapters, Wheel Spacers, Hub Rings, and much more! | Motorsport Tech, using the original lug nuts to secure the spacers, with the proper studs to use the OE 20" wheels' lug nuts (they are different thread pitches). No stud trimming required with those.

Again: without those spacers the vehicle is unsafe. Put the old wheels back on until you get the right spacers.

https://www.wheel-size.com/calc/?whe...scl=2in&sr=0in

 

 

Ah, much better (heart rate goes down...)

I rub/rubbed on three places:

- Front corner of bumper. I resolved that but chamfering the bottom corner of the bumper, lopped off about a 2" chamfer with a Sawzall.
- Front mud flaps. Factory mud flaps rub/rubbed when turning. Did some trimming for most of it, just accept that it rubs a bit otherwise (don't want to remove them).
- Front plastic inner fender liner. I get that on hard bumps, but it's not common. I just accept it; truck wasn't made for 20" wheels/tires...

 

Wow they look great! If its the hard plastic well liner that the tires are rubbing you can try heating it with a heat gun to make it pliable and try pushing it in a bit with the butt end of a screwdriver or something similar. You should see rub marks where the tire is rubbing. That's where you'll want to clearance the liner. If it's the bumper that they're rubbing on you have four options. 1. Cut/ trim the portion that's hitting. 2. Buy a high clearance bumper for your rig. 3. Live with it. 4. switch to smaller tire.

 

Usually the inner plastic fender is the issue. Strategically make a couple of holes through the inner plastic fender and use Ty-wraps to pull the plastic inner fender outwardly from the tire by 1/2". That's the simple fix.
You can also reshape the inner fender with a heat gun. When or if you lift the truck 2" you'll be golden without any issues.