Hi
 
i've just noticed you guys for this tyre size size https://www.longstonetyres.co.uk/pirelli-collezione/cinturato-p7/205-50yr15-pirelli-cinturato-p7-n4.html 
 
This is a Pirelli Cinturato P7. this was the tyre of the '80s and this tyre was OE on 930 Porsche and Lamborghini Countach. However looking at my 1990 Pirelli guide this is also very much a sierra tyre.
 
Both my Mum and my Uncle had Sapphire Cosworths. In fact i crashed my uncles Cosy at Park Corner at Cadwell park. I was cringing with embarrassment as my uncle drove past in my MK5 Cortina.