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Re: steering vibrate when I brake
This sounds like one of 3 things. first off sounds like the ABS pump might becoming on. or your brake rotor could be warped. or your brake fluid could be contaminated. yeah i know it sounds stupid but it happends. my 06 malibu maxx was doing somthing similar andthe mech at the chevy dealership told me to change it all out. nearly fixed it. but there were a few other things wrong as well.
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if there is vibration on the steering when you braking then there is problem with brake discs they could be overheated and not straight. If there is a vibration on your steering wheel on slower speeds then it can be tyre damage or rim
This is due to poor settings of the wheel bearings,tyres,- check balancing once again, wheel drums/ brake pads,suspension , joints and steering.
In all the entire front suspension must be checked, the WHELL ALIGNMENT must be checked with precision and each of the wheels must be checked for damage on hub, axle or chassis.
Good Morning This is usually a broken belt in one of your front tires. sometimes you can physically look and feel your tire and see where the belt is broke because it will be like a small lump on tread surface. If you have hit a bad pothole or bump in the road will cause this, or its possible to have lost a wheel weight and an out of balance tire will also cause vibration in the front end. I am assuming that below and above this speed you dont notice any vibration and if so i would go to your tire guy and have him look at the tires and check for a broken belt and or balance the tires if no signs of tire damage. Hope this helps you Good Luck and God Bless
From what you have described the disc rotors on the vehicle are distorted and could be fairly badly distorted if they have been subjected to excessive temperatures at any time.
This will translate into a pulsation in the brake pedal - especially noticeable when you brake at speeds above about 40mph. At 60 mph - as you found - you cannot miss it. At higher speeds you will also get some vibration through the steering wheel once you brake.
The disc rotors will need to be examined and removed from the car for machining or total replacement. They may be too worn or distorted for machining as the manufacturers specify a minimum safe disc rotor thickness. Disc rotors don't last the life of the car and replacing them is a fairly routine exercise and not usually expensive except on many European cars and on many prestige brands. The brake pads should also be replaced at the same time unless replaced recently and have minimal wear. The operation of the brake calipers should also be checked.
If you had a wheel balance problem on the car (rectified with a decent re-balance of both front wheels) you would find a constant vibration through the steering wheel at a given speed usually above about 45mph. What you have complained of is vibration only upon braking plus a pulsation through the brake pedal whilst braking. However if you are also noticing a constant vibration through the steering wheel at or above a given speed when cruising you need to have the front wheels re-balanced and the front suspension and steering checked for problems. If you have uneven tyre wear you will also need to have the front wheels re-aligned. If a front wheel alignment was not done on the car in the last 12000 miles it will need a wheel alignment in any event.