So all of a sudden my car now vibrates quite a bit in 5th gear, at about 1700 rpms its the worst, and i feel it in the seat as well as the steering wheel, anyone have any idea whats wrong, an iceberg flew off a truck and i ran over it with quite a loud noise but it doesn't appear to have titanic'd anything theres no visible damage under the car.

 

is it in 5th gear specifically or just any gear at that speed? how fast were you going?

 

how old are your tires?