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Brakes grinding - just the pads, or discs as well?

  • 21-10-2014 12:09pm
    #1
    hidinginthebush
    Closed Accounts Posts: 2,679 ✭✭✭


    Hi all,

    My rear brakes recently started the tell-tale whistle noise when braking, grand I though, I'll get the pads replaced at the end of the month. It's recently graduated to a low grinding noise, does that mean the discs will need to get changed as well? I recall in the past something similar happened to an old fiesta of mine, and it the drums and shoes needed replacing. Just trying to figure out the cost.

    Also, is it a big job? Contemplating giving it a go myself.


Comments

  • #2
    Interslice
    Registered Users, Registered Users 2 Posts: 3,506 ✭✭✭Interslice


    Discs have a minimum thickness that you can measure. Otherwise you can guess by the size of the lip around the edge of the disc or it may have a wear indicator.


  • #3
    _Brian
    Registered Users, Registered Users 2 Posts: 18,717 ✭✭✭✭_Brian


    The whistle you mentioned is the warning to get to the garage ASAP and have te pads changed.
    It doesn't mean drive around for a few weeks and plan it in sometime soon.

    Once you've started grinding into the disc surface as you have now it's a bit of a lottery, maybe you've damaged the surface enoug that it needs changing. If nothing the damaged surface will eat pads much quicker going forward.


  • #4
    hidinginthebush
    Closed Accounts Posts: 2,679 ✭✭✭hidinginthebush


    Ah shyte! Cheers for the replies lads, I suppose this will serve as a lesson to not let it slide in the future. Booked into the mechanic for tomorrow, from talking over the phone the guy thinks the discs might have to go as well (though I'm sure he'd say that). Ah well, expensive lesson learned!


  • #5
    anncoates
    Closed Accounts Posts: 13,925 ✭✭✭✭anncoates


    Garage is the right move I drove for a week or two before when the front brake was grinding and destroyed the disc which had to be replaced.


  • #6
    chicorytip
    Registered Users, Registered Users 2 Posts: 4,257 ✭✭✭chicorytip


    _Brian wrote: »
    The whistle you mentioned is the warning to get to the garage ASAP and have te pads changed.
    It doesn't mean drive around for a few weeks and plan it in sometime soon.

    Once you've started grinding into the disc surface as you have now it's a bit of a lottery, maybe you've damaged the surface enoug that it needs changing. If nothing the damaged surface will eat pads much quicker going forward.

    What about a low grinding noise from rear drum brakes ? What can that indicate ? Shoes need replacing ?


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  • #7
    Interslice
    Registered Users, Registered Users 2 Posts: 3,506 ✭✭✭Interslice


    chicorytip wrote: »
    What about a low grinding noise from rear drum brakes ? What can that indicate ? Shoes need replacing ?

    There's two types of grinding noise. A badly adjusted handbrake will have a different grinding noise than the metal on metal sound a brake shoe, that has worn through to the backing pad, makes. The first leads to the second :pac:.


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