Blue

Don't know whether its true -but I was told the rears only do about 15% of the braking. Could be why people don't really bother to upgrade them ??

paulwadams_my99

hmm, i heard 20%, is there anywhere i can read up on this? Is this the same for most performance cars? Why wouldn't it be equal?

Cheers

Paul

MorayMackenzie

It's not the same for all performance cars... just look at how a performance BMW will sink under braking rather than pitch forward and dive like a scooby.

I found that Tarox sport japan rear discs and pads helped to redress the balance a little... the car sank a bit more and dived a bit less.

Apple

dunno what the scooby figures are but it can depend on a few things

1 obviously, what subaru set it at

2 weight distribution

3 what the pressure control valve is set at (or what the manual valve is set at - type RA?)

4 friction material spec relative to front axle - some cars have equal mu levels (generally french makes) but most have lower mu on rear to save pirouetting whe you touch the anchors on a corner etc

5 how much crud / corrosion is in the rear brakes and hence, whether they are working OK (seized etc)


Apple

paulwadams_my99

This may seem like a dumb question but whats the percentage of braking force on the rear of an impreza. The reason i ask is none of the brake upgrades really concern themselves with the rear disks. I therefore presume that there wouldn't be any great benefit in doing so. If each wheel is independent then what is the maximum at the rear of the car?

[Edited by paulwadams_my99 - 2/4/2002 11:29:45 PM]