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8

What is a freely spinning wheel? Of course, you should be able to spin the wheel by hand, but beneath the brake, bearing and transmission can apply lots of drag. My rear wheels do about 1.5 to 2 turns, my front wheels not more than half a turn when I put them in rotation by hand. While it's the same for the front wheel of my mother's car, its rear wheels ...


6

To my mind, a wheel should spin freely when spun on the jack. A little noise is acceptable but if the wheel is clearly being slowed down excessively or is particularly hot after use, something is not right. As regards causes for brake drag, there do indeed include seized or sticking pistons but could also include sticky or corroded caliper slides (the ...


3

3 ways: Drive the vehicle and do both light braking from 25mph then hard braking from 55mph, if the brake pedal pulses up and down or the steering wheel shakes or vibrates, then you have at least one warped rotor. If stops are smooth and relatively noise free then go to #2 below. Pull the rotors and do a visual inspection, look for cracks (even small ones) ...


2

My first guess would be a warped or marred rotor. By "marred" I mean a section of the surface has been corrupted by a corrosive or partly glazed, so that it is smoother or rougher than the rest of the rotor. Both of these can be diagnosed by the same treatment. Have the rotor "turned" (almost any auto parts or machine shop should do it for less than $30). If ...


1

This symptom is a classic for lug nuts coming lose while you are driving. When lug nuts come lose the wheel will vibrate and after a time, as other lugs on that wheel come lose, it will scare you to death. Check all the wheels for lose lugs as it is hard to identify the correct rim with the lose lugs. Sadly, I know this by experience.



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