Acustomer ’ sattempttogetnewMudGrapplertiresinstalledataCostcoservicecenterendedinrefusalaftertechniciansflaggedasafetyissue:thetireswererubbingagainstthetruck ’ sswaybars.ContentcreatorCreighRiepe,whoboughtthetiresatCostco,acknowledgedtherubbingbutinsisteditwasn ’ tCostco ’ scalltomake.Thestorestoodfirm,citingliabilityandsafetyrisks — continuoustirecontactwithsuspensioncomponentscancauseprematurewearorevenlossofvehiclecontrol.Riepelaterhadthetiresmountedatanindependentshop,LatinoamericanTireShop.Expertswarnthattirerubbingisn ’ tjustnoise — it ’ sasignofpotentialmechanicaldamage.WhilesomepraisedCostcoforprioritizingsafety,otherscriticizedtheinflexibility.Majortirechainsoftenrefuseserviceonolderormismatchedtiresduetoliabilityconcerns,apracticerootedinindustryshiftsfollowingpasttire-relatedsafetycrises.