Will the wheels from a pre 2017 model super duty fit the new 17-18 models. What is the difference. Anyone know

 

Depends on the 17-18. If the truck is an HD250 or 6.7 SRW350, then they would need new rear center caps because those two trucks use the new DANA M275 axle. Even then, I'm not sure if the center bore is larger too? I'd def check before going ahead with the swap. If the 17-18 is a 6.2 350 or standard 250, then yes they would be a direct swap over.

 

assuming 350 diesel 20 inch wheel pre 17 to 350 diesel 18 inch wheel post 17. I like one of the earlier wheel

 

You'd need different rear center caps. I'd check the center hub diameter in both wheels before buying to make sure the center cap depth is the only difference.

 

This is a good reference site.
www.wheel-size.com

 

Bolt pattern and hub bore are the same but the back spacing may be different I know the leaf sprung trucks had less back spacing