255/60/15 tire availability

And people don't believe me when I say there's no tire selection for 15" rims in tires wider than 225. Yeah, there's BFG T/A's, Cooper Cobra's, and maybe one or two others depending on the exact size, if you're lucky. That's it, that's really about all there is.

And you won't get 275's on the back of a Dart without a 1/2" spring offset. 255's are pushing your luck with most Dart's and stock spring locations.