Does anyone know how to tighten the bearings in the hub. I recently curb checked my front left wheel and I'm getting a ridiculous amount of vibration in my steering wheel. I also suspect my alignment to be off

 

http://www.nissanraceshop.com/ and buy new ones. Thats the only way

 

Almost all vehicles nowadays have non-adjustable "unit bearings". Saves time and reduces the chances for errors on the assembly line. Sucks for DIYers, though.

The unit bearing often includes the sensor for the anti-lock brakes and traction control, making it an expensive replacement item.