Question 102
Posted by Michael on October 16, 2005
I recently had the front end on my tractor rebuilt and 3 axle laser alignment done.New 24.5 Lo Pro Bridgestone R-280 tires were installed as were new gas charged shocks all around.The tech checked everything pertaining to the front and rear suspension and it was all O.K. I had the front tires balanced and use Centrimatics all around.There is a vibration at 65 mph to 75 mph that feels like an out of balance tire.There is 110 lbs air in the front and no irregular wear.Kingpins, shackles and bearings are tight.What could this be?
There are 2 ways to balance a tire/wheel assembly..static and dynamic balance. A tire assembly may be balanced staticly but can still cause a vibration when run at specific speeds. A dynamic balance check on each tire assembly needs to be run to verify that the tire assembly's are in spec. I would suggest you take your vehicle to a Goodyear authorized dealer to do further testing.




