Converting 5on5 to 4.75 front rotors

Discussion in 'Classic Buicks' started by MAK567, Oct 8, 2017.

  1. MAK567

    MAK567 New Member

    Can anyone tell me what 4.75 lug pattern front rotor will work on a 1961 Buick Electra. have some wheels that would like to use.
     
  2. John Codman

    John Codman Platinum Level Contributor

    I think you will have to use some sort of adapter. As far as I know, all GM full-sized cars used 5 X 5" bolt patterns. A '61 would have had the big Aluminum drum brakes. You would have to find spindles designed for disc brakes. I don't know whether later big car spindles can be made to fit or not. I'm sure that this has been done before, but if your intent is to convert to disc brakes, it could turn into a bit of a job. You also should remember that GM used the 5 X 5" bolt pattern for a reason.
     
  3. newmexguy

    newmexguy Well-Known Member

    55 - 70 Chev full size used 5 x 4 3/4. As did non fleet/non police 77 - 90 B cars.. Maybe a 58 - 64 Chev full size spindle w/ aftermarket rotor adapted to it could work?
     

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