Select 15” wheels, 14” tire choices are slim although 15” sizes are starting to head in that direction as well.
Do you want to be able to rotate your tires ?
If that’s the case go 15x7 with 245/60-15 tires.
If you don’t care about rotation then go with 15x7 front with 245/60s and 15x8 with 275/60s.
Convertibles look good with narrow white walls, some 15x7s with 215/70s would be a classy look with trim rings on the wheels.
It’s not as if 14” wheels are not an option but with those I would steer towards 14x6 wheels with a 215/75-14 white wall. I’m running these same size wheels and tires on my ‘64 Le Mans convertible mainly because Hurst wheels only come in the 14x6 size. They have a nice ride and they’re actually plenty of tire for stability as well.
So you have to decide what look you’re going for, either muscular or more cruiser oriented.
