Question What size wheel spacer do I need to mount my 315-70-17's

[VictorianFarms]

Can I mount a set of Goodyear 315-70-R17's on the rear of my Dually? What size spacers do I need to spread the distance between the wheels? What is the largest tire you can mount on the stock Ford F-350 Lariat Wheels? I had 315's mounted on my stock 2003 F-350 with single rear wheels. That truck burned in a fire a few days ago and I bought a 2006 to replace it. Any info would help! Dont know much about the Duallys and what you can do with them. Thank You!!!!

 

[JLDickmon]

265's are the widest I fit duallies.. the dually wheel isn't as wide as the single.. spacers are usually either 1/4 or 1/2 inch.