Hi Gang, Good ideas. I go to work in the morning in the dark, and come home in the same, but last night I took my flashlight.....to: Starkweatherr... The tires are good old 6.00x20 6 plys. The fronts are "Wards Riverside DeLuxe". One rear (outside dual) is a Firestone, the other (outside dual)is a " National....truck and bus". It says it is "gum filled" whatever that means, referring to gum rubber I guess.They are in good shape, the old Bolt being up on blocks for a few decades. I will crawl under this week end to see what the inside duals are. The low profile look is perhaps you seeing that the rear outside dual is more low profile on the bottom. I hope my local tire shop can find a tube or two. TerryJ