need help purchasing street radials for my 74 dart sport

TF360 said

Matthew- beautiful car! 275's are too big. 255's are the best bet with 4.25 bs for a 74. 255's should also work with 4.5 bs. Another member her Dusterdaddy just made the same mistake of buying tires that were too big. try to find his posts.

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Thank you! I’ve never bought wheels and tires before so this is completely just out of curiosity, if a 255 works with a 4.25 backspace shouldn’t that mean a 275 will work with a 4.5 backspace? I know a 4.5 backspace will work since so many people run it, and that’s only a 0.7 inch wider tire and a shorter sidewall than a 255/60. That being said, I have no experience so I’m just trying to learn