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Registered
Join Date: Feb 2007
Location: Atlanta GA
Posts: 42
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When to change calipers and when to bleed...
How often should you replace your brake calipers, and is it necessary to bleed your brakes when changing your pads?
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95 318is, stock, burgundy exterior, 2 one baige interior, automatic, 180kmiles |
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Registered
Join Date: Nov 2004
Location: Atlanta
Posts: 773
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You typically don't change calipers, unless they fail (leak or the car does not brake properly). It is a good idea to drain and bleed the entire brake system during the brake job, but if not, at least bleed it.
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Moderator
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Best practice to:
bleed when you change your brakes open the bleed valve when compressing the piston back inspect the piston dust boot if dust boot is dislodged, pull and inspect the piston and rebuild or repack the caliper as necessary Only if the piston is bad would you need to replace the piston or caliper(as a whole). However, since replacing the calipers is not a maintenance item the your question actually is "How often should you rebuild your calipers?" Rebuilding the caliper is simply replacing the dust boot and piston sealing ring. The answer for a street car is the piston sealing ring should go 15-20 years if nothing exciting happened to it such as the dust boot was dislodged and trash built up around the piston.
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HPDE Instructor (BMW / PCA / Apex) Here: 1997 M3/4 Byzanz/Magma ~ 2006 Yamaha R6 ~ 1997 R1100RT ~ 1991 Ford F-150 5.8l ~ 2015 Kia Optima Gone: 2001 330i Silver/Grey ~ 98 Camry V6 ~ 97 Camry I4 ~ 97 Mazda 626 I4 ~ 93 Sentra SE-R ~ 88 Toyota Truck I4 |
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