Date registered: Mar 2005
Vehicle: '01-E320 & 02-ST2
Location: John 15:18-19
Mentioned: 0 Post(s)
Quoted: 35 Post(s)
RE: What are the negative effects of a power brake?
Failure of the power booster would be the biggest concern I can think of. You lose the power assist, which leaves the brakes much harder to apply than they would be if they weren't power brakes in the first place (yeah, I'm old enough to remember driving cars that didn't have power brakes). And depending upon the type of failure, you could create a nasty vacuum leak that results in serious and potentially dangerous driveability issues. Related to that is when the seals in the master cylinder start to wear and seep, the vacuum from the power boost will suck that into the engine, not that bad, but it greatly increases the rate at which you run out of brake fluid (and ultimately, brakes).
From a driving enthusiast's standpoint, power brakes (like power steering) remove some of the ability to sense exactly what the contact patches are doing, and thus negatively affect the ability of a capable driver to more closely modulate the brake pressure. (ABS and traction control take up most of the slack for the more casual driver, though.)
All of that said, I still prefer power brakes for regular old street cars. Technology and engineering has made them much more reliable and let's face it, it's easier to press that pedal. [:)][;)]