hallo,best is to buy the book ABARTH 850 TC e 1000 from giorgio Nada editore and Aligi Deganello /Elvio Deganello here you find most details and info and all homologations .The standaard wheels where like on first photo.The homologated wheel from 1967 was the 8 holes in 3,5;4,5 and 5,5 x13 in gr 2 after 1970 there was also 6,7and 8 x13 have also a look here newbielink:http://www.abarth-gmr.be/forum/index.php/topic,1387.0.html [nonactive]