Absolutely... no on the black paint .Which looks better?
I really love these wheels but I don't like the modern 15 inch look with non period low profile tyres (225/45 x15). So I have contemplated Michelin TB15's but with the larger diameter sidewall (available in either 215/55 or 270/45 x 15) But I am afraid I will have wheel-arch clearance problems. So I thought why not continue with the 225/45 but paint the outer edge of the wheel black so aesthetically at least you "get the look" Here's a black tape mock up comparison.
How about getting period looking 8x13 or 9x13 gtam, bwa’s , 4 spoke gr 2 campy wheels that these cars ran on back in the day? There is a wonderful selection of 205 225 235 245 available for 13’s with pudgy sidewalls for the proper vintage look these days.
The beautiful Michelin TB, 3 of my friends are running them... while I’m sitting on the fence. They come in 13’s too but they cost a small fortune... to make matters worse the change the compound recently so they wear out even quicker. You can get a set of period correct 13 wheels and tires cheaper than just 4 TBs.