Hey Mike, I'm thinking about putting 15x7 sbp Cragars on the back of the new D/Dart. It seems your rims are neutral offset (centered in rim barrel). How much more tire could you stick under it? On the other D/Dart, I had problems with the leaf spring clamp on the pasender side. Those were 15x6's with a neutral offset and 28.0/9.0 15 - M/T ET Drags. I have SS springs on it so it clears the sidewall. So more tire?