Spanky, I disagree, the hub size does matter for our hub centered wheels. I am not saying it won't work if they don't fit tight, but I would not want to drive much more than around the farm and the occasional trip to town, while checking the torque on the nuts often.
Glamis4x4 it correct. If a wheel uses flat faced lug nuts it must be centered by the hub. If not there is opportunity for the wheel to slide around under the lug nuts, this can cause studs to break and wheels to be off center and out of balance.
If a wheel uses cone shaped, or other than flat, lug nuts the center hole and what it fits is not important. The lug nuts center the wheel and keep it from sliding around.
The hole size in the modern 19.5" wheels with 7.25" bolt circle is 5.25" This is the same size as some of our old trucks, and larger than some, perhaps pre AD?
The ford version of this bolt pattern uses a center hole of 5.46", therefore the ford wheels are not suitable for our trucks, although the bolt pattern is the same. They may use 9/16" studs, and we use 5/8", but not 100% sure on that. I have only seen the ford wheels in 16", not 19.5"
If you do use the 19.5" wheels on your old Chevy, you are probably replacing 7.00X20, or 8.25X20 tires. These original tires are about 36" to 38" tall. The tallest 19.5" tire that fits the rims available is a 8r19.5, and about 31" to 32" tall. This smaller tire will make your truck slower, (and your brakes more effective).
Personally I think that the 8R19.5 tires look really bad on an AD COE, bad on an AD 1.5 or 2 ton, and great on an AD 1 ton.
Grigg
