There were multiple tire suppliers - don't know the Camaro lineup, but as an example, blackwall and whitewall tire suppliers for the '67 Corvette 7.75-15's were Firestone (Deluxe Champion), Goodyear (Power Cushion), Uniroyal (Laredo), B.F. Goodrich (Silvertown 660 and 770), and General (Jet-Air II). I expect the Camaro lineup was similar - perhaps someone else has the exact listing.