Dart Rear Wheel Question

My car had 225/70R14s on the rear, with 14" X 5 1/2" factory Rallye wheels, when I got it.

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I have since upgraded to 245/60R15s on 15" X 7" WheelVintique Rallye wheels (could've gone with 255/60R15s (will next time)). I did use the bumper jack to mount them.

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