Pontiac shimmy


#1

This car in spite of numerous tire replacements continues to shimmy on the highway. What’s up?


#2

Out of alignment

Worn suspension components

Worn engine or tranny mounts


#3

Tire replacements are usually accompanied by wheel alignment. Did you do that? If not, why not?

Pontiac. That doesn’t tell us too much. Year and model would help enormously,


#4

While you did not see fit to share the model, model year or the odometer mileage of your Pontiac with us, my first thought is:
Numerous tire replacements? Within how many miles/years?

Since tires will usually last for several years, if you are replacing them very frequently, it certainly sounds like you have issues with wheel alignment and/or worn front end components. Since worn front end components can be a significant safety problem, I would suggest that you get this car to a reputable front end mechanic (NOT a chain operation!) in order for it to be checked.

What is now a shimmy could become loss of steering ability very suddenly, so this is not something that you can continue to ignore.