Thanks Josh. It's stud piloted so isn't a GMC. Not sure why the stud holes are smaller. The numbers that you posted are probably on the ring, am I right? If it's a Budd product there will be a number on the back edge. If you can find that I may be able to look it up. If there are no numbers it's probably a K-H. Stu

 

Yep numbers are on the ring, Back edge of the ring? or on back side of wheel? for the budd numbers? I'll take a look next time I'm by there again.
I havent measured the studs on my F-6 but you mentioned 3/4" studs ?? so would this wheel still fit on my truck? or similar truck?
Thanks
Josh

 

Back edge of the wheel (concave side) opposite the valve stem. Pretty much all trucks that size used 3/4" x 16 tpi studs. Even the hub piloted Chevy and GMC wheels used the same size studs, but on them the Motor Wheel system used all right hand threaded studs. The GM wheel holes just look smaller because there's no champered ball seat like on our trucks. That wheel should fit your truck just fine. Find me some numbers and I'll be able to say for certain. Stu

 

Hi,
I am new to the group and a little confused on the whole rim issue, (I believe these are the ones I have on my truck)
Is the one you have pictured here considered the widow maker??
If so what rims would I get to replace them?

 

Welcome to the group. You’ve found a really old thread. Most likely your F-5 does have the “widow maker” two piece wheels that have the trade name Firestone RH-5°. Below are a couple other pictures of it. Replacement tubeless 19.5” or 22.5” wheels are your best answer. One of our guys has a set of 19.5s available in MT if you’d want to discuss them with him. I can ask him to drop by to comment. I would also suggest reading through the tagged wheel posts over in the big truck forum. Link bellow. Stu

https://www.ford-trucks.com/forums/8...-1-2020-a.html

 

I have some 19 5s You are welcome to call me if you like 406 880 5473 anytime. I think the frieght would be a big cost . my zip is 59804 if you would like to check