Your video is an excellent demonstration of the difference in the size of the tyres. Standard wheels on the 330 GTC were the10 hole alloy 7L x 14 inches. The Borranis were optional. RW 3874s are incorrect at 6 1/2 inches wide. RW 4039s are correct at 7 inches wide. From the 330/365 GTC Owners' Manual. Image Unavailable, Please Login
Same for the 275 cars that used Pirelli or Dunlop tyres when new, which mostly today, and for many years, are shod with Michelin XWXs .