vamshi 
2006 Nissan Altima Sedan 2.5 S 4dr Sedan (2.5L 4cyl 4A)
not so smooth....
 I had this car for almost 3 years...37K miles on it. the tires that came with the car were very cheap...cant blame the car.  My only complaint is the ride doesn't feel smooth anymore....I can hear the road noise through the cabin....It is not supposed to be that way. Dealer says everything ok but not sure. Like the car for all its features but still have my doubts about its reliability. 