14x4.5 BBP spare wheel
Well, sort of. The ones I was thinking of look like regular steelies but they are 14x6 and 5x4.75 bolt pattern. I could swear I took them off a 787 Volare I parted out but it's been long enough now I don't recall for sure.
I do have a pair of Magnum 500's, 14x5.5, LBP. They are quite rusty but appear to be workable if you want to put some elbow grease into them.
