15 inch wheels on early A body pictures

Looks awesome! I have 15x8 sbp I'm thinking 245 either Cooper Cobra or BFG TA. See any issue with 8" vs 7"?
The tires currently on green steel wheels are 275's, wayyyyy too wide/ TOO CLOSE! lol. With my 245's currently on Cragars give me 3/4" from sidewall to leaf spring 83/4 diff if that matters. Don't wanna come any closer to leaves.
Thanks
My 66 has SBP Wheel Vintiques front and rear. 15x7 rear with 245/60-15, and 15x6 front with 215.65-15, all Cooper Cobras. They fit easy-peasy with no binding or rubbing anywhere. I'm still running the factory 7.25 and 9" drums all around.

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