BBG1 
2007 Nissan Sentra Sedan 2.0 4dr Sedan (2.0L 4cyl CVT)
Rear End Alignment
 I love the car. Never a days trouble with it... Except I was confused has to why I kept wearing through rear tires every 10-12k miles.  Turns out the rear alignment is out and not adjustable.  The dealer would not give me straight answer about fixing it under warranty unless I paid for a diagnostic check up for a hundred bucks.  So I had a local garage install adjustable shims and do an alignment all for a $125 in one afternoon.  No dealer hassle.