ok i know its only one but at least it gives you an idea
cgi.ebay.co.uk/MINI-One-Cooper-R50-2-3-5-5j-x-16-Steel-Wheel-Style-12_W0QQitemZ300308336065QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item45ebc58dc1
size is 5.5J x 16"
cgi.ebay.co.uk/MINI-One-Cooper-R50-2-3-5-5j-x-16-Steel-Wheel-Style-12_W0QQitemZ300308336065QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item45ebc58dc1
size is 5.5J x 16"