You need 185R14 tires, with C or D load rating. Most of us buy a set online, get them mounted locally… lots of “normal” tire shops aren’t used to this size and struggle to make sense of ‘em. 

Example of popular, affordable choice, which you can Google: Thunderer Ranger R101 All Season 185R14 102/100Q D Light Truck Tire (found at Walmart, among other retailers)

Hello out there. I just bought a 1991 Toyota itasca spirit. I can't figure out the tires, of which I want to replace. They have 185 R 14C and UE168 and there is a 102/100N. HELP

Bought a 1979 Sunrader today.  It has the 20R engine.  I think it’s about 17 ft long and it has the rear hatch.  It is missing the starter ( but yes we witnessed it run after bump starting).  The problem is I don’t know what starter I need to replace it, and I can’t compare to the original since it is completely MIA.  The options are: direct drive without R terminal, direct drive with R terminal, gear reduction, and offset gear reduction.  Is there anyone who can tell me which one I need or who could post a pic of their starter?  I’m sure I’ll be reaching out more as we go through the inside and out of this RV!  Thanks