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1. Your car may have had previous frame and/or unibody damage. 2. Did you have a 2-wheel or 4-wheel alignment done? If it was only a 2-wheel alignment, the rear axle(s) may not have been properly aligned with the front ones, so that your vehicle may "dog-track" with rear end swaying to one side or the other after you hit bumps or uneven road. 3. Your front or rear shock absorbers may be worn out. 4. Make sure that the new tires are the correct size as recommended by the manufacturer of your car.

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Q: Why would the rear end of your car sway while driving on imperfect roads after you have 4 new tires and an alignment?
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Related questions

Why does a car pull to the right when driving?

You have an alignment problem. Possible problems that help with this are tires, brakes.


Are your tires out of alignment?

Tires do not get out of alignment they may be out of balance but not alignment. Your suspension however can be out of alignment. The only way to know for sure is to have it checked.


Why does my steering wheel shake on 1997 Chrysler Town and Country?

Your tires are bad or you need an alignment. Get your tires checked, they may need to be replaced or rotated, and you can check your alignment by letting go of the steering wheel while driving, if it drifts left or right significantly, you need an alignment.


While driving What causes car to pull to the right?

most likely the car's tires are out of alignment, or you have a slack tire.


Do new tires require a wheel alignment?

Not necessarily. If the car was in alignment prior to getting the new tires, it will be in alignment after the new tires. It isn't a bad idea to check the alignment periodically and it is probably better to check it more frequently than when you get new tires.


Which sitcky tires are good for racing but also for daily driving?

None, they are not designed to used on normal roads.


How long can you keep tires before they become unsafe?

Your vehicle owner's manual has tire inspection or replacement recommendations but your tires should be replaced if they are over 5 years old or the remaining tread is 5/32" for driving in snow, 4/32" for driving on wet roads and 2/32" for driving on dry roads.


How do you do a front end alignment on your 69 Plymouth roadrunner?

Wheel alignments require special equipment, but to do a rough alignment,(such as after replacing steering parts)to get you to the alignment shop, you can measure the back of the front tires at center, and the front of the front tire at center and ensure that the two measurements are the same.Then go straight to the shop. Driving with the alignment out wears tires and can result in loss of control.


Why is driving on wet roads so difficult?

The amount of friction is reduced. That is one thing that keeps the tires on the road.


What is wrong when my car makes a humming noise when driving straight and goes away when braking this is intermittent?

There is a list of causes, ranging from newer roads to tire wear to bad alignment. Drive a gravel road to eliminate that possibility. I would guess, however, that your tires are not wearing evenly...rotate the tires. There should be a pattern for rotation in your owner's manual.


Should i get an alignment before or after new tires?

You sould have the new tires mounted FIRST, then have them do the alignment at the same visit.


What causes excessive tire wear?

Running the tires low of air pressure or too much air pressure. Suspension out of alignment. Hard fast driving with sudden stops, hard acceleration, and driving on a curvy road at a high rate of speed.