[Canuck]

Michelin were building radials in the 50's. Radial tires were their core business. Cars like Volvo, Peugeot and Renault were commonly shod with radials from the mid 60's.

Oldsmobile offered a radial as an option on the Toronado in 1966 but the weight of the car was too much for this tire. Ford offered Michelin Radials in 67 or 68 as optional tires as previously stated.

I purchased my first radials in 1971 for my 68 Camaro. They were a Firestone Radial V1.Firestone replaced the V1 with the 500 and the rest was history.

When I bought a new Duster 340 in the spring of 73 I had it shod with Goodyear Bluestreak radials, which were Goodyears police tire.

GM started using radials on its product line in 1974 in all but its least expensive cars. Not sure if they had the tires as an option in 1973.

Paul