Gary,
those are the 15x8 & 15x10 Campys, with the original Goodyear Arriva tires mounted, which were C60-15 front & H60-15 rear. The US Pantera L & GTS had those tires mounted on the standard 15x7 & 15x8 wheels. They look a lot better on the wider wheels don't they?
The tires were roughly 25" diameter front & 27" diameter rear.
Today the tires you'll be mounting on those wheels are 215/60SR15 front & either 255/60SR15 or 295/50SR15 on the rear. You will not find those tires available with V or Z speed ratings.
After the Ford era, DeTomaso equipped those same wheels with Pirelli P7s in the sizes 225/50VR15 and 285/50VR15. If you don't mind mixing & matching tire models, the 225/50VR15 is still available from several manufacurers, but not in the same "model" with the 295/50SR15.
George
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