I just installed a set of 19" mrr gt-1 on my car and they didn't come with wheel locks and the guys at the tire shop said the stock ones don't work. I was wondering if any of you guys knew a place to purchase a set of these online. Thanks for any help.

go the vendors... they are having a sale in the Premium Lugs... by volks... looks good...

try ebay..or like acefalcon2 said..CL vendors..I'm sure they carry good stuffs at competitive prices..

here's a short cut
https://www.clublexus.com/forums/clu...-in-stock.html
AND
https://www.clublexus.com/forums/clu...uts-sales.html