Do you have to bleed all four brakes?

I’m having the calipers in my front brakes replaced, and the mechanic says I should bleed all four brakes—the back ones as well as the front ones. Is he right? Do you have to bleed all four brake lines?

Rachel Rigolino · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Yes, many car experts recommend that you bleed all four brakes once you open one of the brake lines to replace a caliper or do other work. However, this is not a hard-and-fast rule, particularly if the brake line you are having work done to is independent of the other lines.
However, if there is air in your brake lines, the brake fluid cannot work properly to compress your brake system, meaning your brakes won’t work effectively.
One further consideration: many professionals recommend that brakes be bled once a year as a part of preventative maintenance. So, if you’re having work done on your front brakes now, you might as well have the mechanic bleed all four.
Always count on
car insurance
to help you determine what repairs are essential. Brakes, for example, must be maintained properly. This is one area where you don’t want to cut corners.
But when it comes to car insurance, many people wonder if they’re paying too much. Jerry can help you here as well.
It’s this simple: download the
app or go to In less than 45 seconds, Jerry collects all of your information from your existing
car insurance
company. Choose from competitive quotes from 50-plus top insurance companies, and Jerry takes care of the rest—securing your new policy and helping you cancel your old one. No long forms. No calling around. No hard work. Just savings. The average Jerry user saves $887 a year on car insurance.
View full answer 
Jerry partners with more than 50 insurance companies, but our content is independently researched, written, and fact-checked by our team of editors and agents. We aren’t paid for reviews or other content.

Join 4M+ members in lowering their car insurance

Easiest way to compare and buy car insurance

No long forms
No spam or unwanted phone calls
Quotes from top insurance companies
Find insurance savings