24000 miles for me.
Brakes are definitely cheaper than autobody repair. 
Brake Replacement
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
It depends on how your drive and brake. If normal street driving your fine. Look at your brake pads or check your owners manual. Change your pads at 30%. and IMHO flush you brake fluid every 2 years in all your vehicals.
Brake fluid looses its abilty as it become saturated with water. Water satureation is 4% in brake fluid, which under normal use is 6 to 18 months. Saturated brake fluid can take up to 25% longer but in most cases 10% longer to stop your car. If you have an emergancy situation even longer to stop.
But then again I am kinda particular on brakes .
HTH
Brake fluid looses its abilty as it become saturated with water. Water satureation is 4% in brake fluid, which under normal use is 6 to 18 months. Saturated brake fluid can take up to 25% longer but in most cases 10% longer to stop your car. If you have an emergancy situation even longer to stop.
But then again I am kinda particular on brakes .
HTH
Race Director
Joined: Aug 2003
Posts: 16,270
Likes: 30
From: "It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark, and
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-‘18-'19
NCM Sinkhole Donor
Brakes? I thought those slotted and drilled things I have were part of the wheel! I don't use 'em - that's what the horn is for! 
J/K!
Depends on the type of driving you do - all highway driving is a lot easier on the brakes than city driving. Also - competition driving has a tendency to eat up the pads, too. 
J/K!
Depends on the type of driving you do - all highway driving is a lot easier on the brakes than city driving. Also - competition driving has a tendency to eat up the pads, too.
Le Mans Master
Joined: Aug 2002
Posts: 8,222
Likes: 0
From: Norfolk VA
Originally Posted by blacksedan87
- competition driving has a tendency to eat up the pads, too.
you mean that most people don't have to replace their brakes every other weekend????? 
on a serious note: my stock pads had 24K before I swapped them out, they've got about half their life left in them, I've still got them around as a get home/emergency set
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Melting Slicks
Joined: Sep 2004
Posts: 3,024
Likes: 18
From: DFW Texas
Replace them under TWO conditions:
1. When you get tired of seeing brake dust cover your wheels. OR,
2. When you no longer see brake dust on your wheels (and haven't changed to ceramic or Hawk pads yet.)
1. When you get tired of seeing brake dust cover your wheels. OR,
2. When you no longer see brake dust on your wheels (and haven't changed to ceramic or Hawk pads yet.)