Five year old article on the "15 inch tire problem"

autoxcuda said
So you are looking for a specific size.

225/60/15 or 235/60/60 correct ?

They used to make V-rated stuff in those sizes, specifically 225/60/15 for 80’s and early 90’s Police and Highway Patrol car fleets. Diplomat, Mustang, Crown Vic, and Impala’s cop car of that era all used that size.

that’s a lot of fleets, lots of miles, lots of tires.

Now those are hobby cars.

Stock late 80’s Mustang 5.0 and Full size Jag’s come to mind as using 225/60/15. The first tires I bought for my 68 Barracuda with 15x7 cop rims was a used set of Yokohama AVS off a 4-door Jaguar

Any size 215/60/15 to 275/60/15 or even 255/50/15 to 295/50/15 would work for me, and that’s about the same size 15’s we run anyway.
But I’m getting to where I resign myself to the idea that I’ll only find sticky tires if I move the rim size up to 16’s or bigger.