1969 Dart GT vert Cragar REAR wheel size help needed

69conv said

I rolled that fat lip on my 69 gt vert with a heat gun and wooden bat. Squeezed in a 225 70 r 14 without a spring relocation kit.

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I’ve got 14x7 Cragar with 235/60x14 on there now all the way around- no problems. Liked the ability to rotate as needed.
No alterations to springs. Occ rub up front but fit well in rear with an inch clearance tire to fender...
Want to go 245/60 or 255/60 in back if I can.