On my 70's F600's they have split rims with tubes and 9.00x20 tires.
I want to replace the rims with non split, I am looking for factory steel what should I be looking for?
Keeping the old style tires is optional but 20" I'd like to retain.

 

Might need to first settle on what you now have. If you now have the rims that split along the middle, they are the Firestone RH-5° style. Today called widow makers. Few shops will touch them. Here is a cross section of it.



If, however, your rims have rings along their face sides they are still serviceable. But if you really want one piece tubeless wheels, they don't exist in the 20" size. You'll want to look for 22.5" wheels. A common wheel having your 6 lug x 8.75" pattern is the Accuride #28157. No longer produced in the old original style, but new wheels are being reproduced. They look a bit different, having a wider face and small hand holes, but they are factory new. Places like Wheels Now in WI, and American Wheel Specialist in WA have them available. If you want old originals it'll take yard searches. They haven't been out of production that long so finding a set shouldn't be real hard. Stu

 

Split on the face type. I dislike tubes and split rims. All later are 22.5" ?

 

Yup, all TUBELESS are 22.5". I looked in Accuride's current online catalog and see that the 28157 is still listed. Pretty certain I'd heard it was out of production, but I guess not. Go to page 17. Stu

http://www.accuridewheelendsolutions...ummer-2011.pdf

 

2015 catalog - http://www.accuridewheelendsolutions...talog-2015.pdf

its obsolete in it, unlike your 2011 catalog link.

It shows no replacement number. Page 54

Page 19 has 17.5" & 19.5" wheels

 

Well, darn'dest thing how that works!! Guess I need to update my link. Thanks. Stu

 

Why not stick with 20s? The rings arent that bad, just takes some work to swap around.

 

Used 22.5" wheels with the 6 on 8.75" bolt pattern are out there, you just have to look for them. I found an old B600 school bus that 5 of them and 1 20" widowmaker. I found another 22.5" at a medium size truck salvage yard. I paid $25 or $30 each for the 22.5's.
Then I found a 1978 U-Haul F600 with 6 22.5's. I took the 22.5's off and put my old lock ring 20's on it. Took the cargo box off and I use it as a storage shed. Sold the cab & chassis for what I paid for the whole truck so those 22.5's didn't cost me anything.

 

What trucks have 19.5" wheels with 6x8.75 factory?

 

Some IH chassis for walk-in vans and current Isuzu NPR trucks, but I don't know the specifics on those wheels such as hub diameter.

The Isuzu trucks were also sold as Chevies and maybe GMCs.

 

I started to search for a 19.5 tire that is 40" tall no luck. Time to rethink it.

 

IIRC the tallest 19.5 I looked at was about 35"-36" tall.

 

The Accuride 29388, the 19.5" that is still catalogued having the 6 lug X 8.75" pattern, is 6.00" wide. The widest tire spec'd for a 6.00" rim is an 8R19.5" at 33.5" tall. A 225/70R19.5" is also spec'd for that width and is about 32" tall. To get your 38-40" tire you need a 22.5" X 6.00" or 6.75" wide rim. A 9R22.5" at 38" works on either width rim, while a 10R22.5" would get you up to and beyond the 40" on the wider rim. Stu