I have a 1971 Duster 340, restored to factory spec. no modifications.
I would like to swap my 14x5.5 small bolt Rallye wheels (E70x14 Goodyear Polyglas tires)
And replace them with 15x6 Mopar steel wheels from Summit. Forgot to mention car has manual drum brakes.
Anything I should consider that might cause a problem with fit?
Is there much of a difference in the fit between 14- and 15-inch rims?
Looking at BF Goodrich 205/70 tires.
The Rallye wheels and tires would be used for shows.
Thanks for any suggestions

 

The bolt pattern on your 71 should be the small pattern, either 5x4 or 5x4.25 I can’t remember so make sure the wheel bolt pattern is correct for your needs. The other option is to use disk brakes and the 5x4.5 bolt pattern and new or redrilled axles and drums for the rear with the 5x4.5 bolt pattern.
good luck