I had issues with my lugs swelling - I replaced mine with these and have been good to go ever since. $45 for a set of 20 : https://www.ebay.com/itm/B-C19B26-Otis-Inc-LA-European-Made-Lug-Bolt-M12x1-25x26-cone-seat-hex-19-zinc/370593606042?epid=532252688&hash=item564919a99a:g:FGsAAMXQOT5Q9tBO:sc:USPSPriority!84124!US!-1