seems like the steering wheel is shaking extensivly when i reach about 70 - 80 miles per hour does anyone know why this would be happening i thought it might be my tire pressure and i had that fixed but still seems to happen thanx for any help you guys can offer

 

Please rotate your tires, exchanging the fronts and rears.

If the vibration symptom goes away the problem is associated with the tires or wheels.
- tire out of balance
- tire out of round
- internal tire defect such as tread ply separation
- bent wheel


If the vibration symptom remains unchanged the problem is associated with the vehicle.
- bent hub
- worn ball joints
- worn tie rod ends
- worn control arm bushings

 

yes i also didnt mention that i had my tires rotated also so if it is one of these things
- bent hub
- worn ball joints
- worn tie rod ends
- worn control arm bushings
how wouldi know if it is one of these things and what can i do about it ?? PLEASE HELP!!!

 

You could pay a professional to make these checks.
You could get a repair manual and follow the instructions in the book.

Replace the damaged or worn parts.

 

how much would it cost for a proffesional opinion and how much would this run me to have them replaced?? thanx again

 

I believe a skilled professional could evaluate your car in one hour. I don't know the hourly labor rate in your area. In general, labor costs are lower in rural areas and higher in urban areas.

We don't know which parts require replacement. Without knowing that it is impossible to estimate repair costs.

 

Are you running on stock Nissan wheels? Some aftermarket wheels require centering rings to run true.

 

i am running on stock wheels with about 30k on them