I've purchased grey 19" replica wheels and want to buy matching lug nut caps (already got the center caps from Tesla). I'm in Canada so it's not really worthwhile to get the ones from TST as they'll run close to $100 CAD shipped and Tesla is charging $4 each ($80+tax total). Does anyone have any suggestions for more inexpensive ones from ebay etc which work well? From looking around online they seem to be 21mm caps. Thanks in advance.