WHEN DRIVEN THERE WAS A SQUEAL IN LEFT REAR WHEEL. REMOVED THE CAP AND BACK THE NUT OFF, AFTER CHECKING RIGHT AXLE AND FOUND THAT THE NUT WAS EVEN WITH THREADS. ON THE LEFT AXLE IT SHOWED FIVE THREADS. SO HOW TIGHT SHOULD THE NUTS BE ? PURCHASED THE 99 ALTIMA FROM A DEALER I THINK THAT I SHOULD BRING IT BACK TO THEM FOR REPIARS,BOUGHT IT AS IS.