255/60/15 tire availability

I was hoping somebody had found a little hidden secret out there on a basic black sidewall tire. I can unfortunately see 17” wheel in my future on this semi daily. It’s funny that 16” were a quick fad. It went from 15-17 in no time. I remember when 17” were huge wheels.

Even the tire selection for 17" rims has dropped off dramatically. There's still way more selection in 17" than 15", but 18" has more selection still. Even 18" rim tire selection has dropped off from a few years ago.