Interesting subject....tires. Some of you know that I'm into sixties vintage hot inboards. I restored a 1965 drag hydro, and two 1965 flatbottoms, and a fourth '63 flat. All riding on original wheels. In the sixties and seventies we NEVER had a spare tire for the hydro trailer. Why would you?, you could just pull into any gas station back then and buy a new or used 14" or 15" one inch white sidewall tire put on to replace your flat tire. Most every ski boat trailer came new with a ( then ) popular passenger car tire size, so obtaining another tire on the road was easy. THAT WAS THEN! Try finding an open gas station, or those size tires today! A roadside flat occurred to me a few years back, so I now have matching spare tires for three different trailers, two different bolt patterns, and two different wheel diameters, and ALL have to be purchased from Coker or Lucas Tire, being that they're vintage in size. My everyday car is a '71, and it too, has a wheel and tire size that must be mail-ordered. My Wife's Honda?, crap, you can buy those doughnuts at Costco. For me, I guess it's just the price you pay for originality.