According to the information in the book "Pantera, the ultimate portfolio", pages 16 and 19; if you are talking ORIGINAL size (1971) they are: Dunlap, Michelin, or Goodyear radials, Front- 185/70-VR15, Rear- 215/70-VR15. You'll have to look up the diameters yourself. Marlin.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.