I need the stock wheel specs for 84 f250 4x4, backspacing and offset? any help is appreciated.

 

I can answer your question using technical data from my wheel references. Maybe one of the others has period Ford references that could show other optional wheels that were offered. I found no differentiation 4wd vs 2wd.

The stock 1984 F-250 wheel is Ford number E5TA 1015KA. The primary supplier to Ford appears to have been Kelsey-Hayes. Their number for the wheel is 109291. The National Wheel and Rim Association (NWRA) cross reference code is X-45304. Accuride also lists the wheel under their number 28378 and NWRA code X-45234.

Both of these wheels have the same technical description. The wheel is 16" x 6" having a 5° rim profile and "K" drop center profile. The "K" is diagramed below. The center disc has a 8 x 6.5" bolt circle and uses 60° cone lug nuts. The center bore (hole) is 4.88" in diameter. The wheel mounting surface is 1/2" forward of the rim center line. This would be called a 1/2" positive offset. The center disc has "outie" hub cap nubs. A 1/2" positive offset on a 6" rim yields a backspace of 3.5".

Also listed for F-250s for a wide range of years was K-H #121163 / NWRA code X-45319. It is 16" x 6.5" having otherwise the same description as the above. I find no Ford part number for it, but find it listed for Ford 3/4 and one ton models as well as similar Dodge, GM, and IHC models. Backspacing for this wheel is 3.75". Stu

 

I need to modify my statement about backspacing. As seen in the above and below charts, backspace calculations include the distance to the outer edge of the rim lip. That adds about 1/2" to each of my above figures. Stu

 

that is exactly what I needed, thank you so much.