Uneven brake pressure at rear - 1989 Daihatsu Charade

hi, if the grab is while braking, there may be an uneven piston to pad/drum wear or adjustment -- check brake assembly and pressure equalizers on the lines -- they put equal hydrolic pressure to both wheels - if one is bad, that will also cause problem of grab

wow ,im soory to tell u that litle can be done ,but try to check the valve underneath that is activated by weight or load, as it supply rear brakes with braking fluid might be faulty cuasing ur braking force to be more as if its laoded, most likely cause is how u have adjusted your hand brake, if its too sensitive , it will cuase ur rear wheels to lock, which means they get activated first then ur front brakes, re adjust your hand brake to 3 clicks , not one.
thank you

check to see if the rear end needs to be changed, this could be due to the cv axle or even alignment on the tires. and possibly your shocks so get those checked

Unless one of your calipers is sticking or not engaging fully then there should be no reason for uneven wear unless you have a defective pad.

There will be uneven wear from the front to the back however. About 60% of the stopping power is provided by the front brakes and 40% from the rear , so your front brakes will wear faster than your rear brakes.

Master cylinder, uneven pressure from front to rear.

this could be the result of sticking/hanging caliper(s) which hold pressure and reel the lining off pads in a quick fashion.check calipers

do your brakes feel spongy? like too soft? . .n if it feels uneven maybe u may need to bleed your brake lines if u have to step too hard to brake . . u might be compressing air on brake lines intead of the fluid

What happens is if you have a bad front wheel bearing when you brake that wheel will turn in or out,when this happens it throws the four wheel alignment out and since this is a solid rear axle,it's forcing it to flex on the suspension,wich could cause the rear tires to bite on the outside edge of one tire and the inside edge of the other,thats one possible the other would be that the rear brakes are are not slowing the wheels evenly causing the same issue.I saw this problem with a bad front wheel bearing on a Nissan Pathfinder but not as pronouced due to the independent rear suspension. Check the front wheel bearings,which of course will mean getting the calipers off the rotors,and then check for any movement in the rotor,if there is check the hub nut,if it's loose tighten it and check for play in the rotor if there is still play that's going to be caused by a bad bearing.You can check the braking in the rear with a simple spring scale(like the ones used for fishing),with the wheels removed have someone apply enough pedal pressure to just engage the brakes but still allow movement attach the scale hook to a wheel stud and pull until it starts to move and note how many pounds of pressure it takes to move the hub.If it's uneven chech your adjusters and even them if needed and then retest,if still uneven you'll need to bleed them again.As far as the dark black substance in the fluid I would say you may gotten a contaminent in the fluid.Brake fluid gets kind of a rusty reddish residue when it breaks down.If I missed anything or you need clarification don't hesitate to ask I'm home all day.Hope this helps solve your problem.

emergency brake cable may not have been adjusted properly or emergency brake may have been partially engaged without brake light indicating such. Check brake release handle, if it makes no noise as to indicate realease, then it would have to be the e brake adjustment or frozen brake cylanders that when brakes are applied the pressure presses the shoes against the drums but does not release pressure, could be bad cylanders but not likely on both sides at the same time.

The Chardes have a diagonal split system, so one of the front discs is plumbed to the diagonally located rear drum.

You may need to check the front brakes too and that they have been bleed properly.

Other common cause of uneven braking are:

seized wheel cylinder;
brake hose obstruction or weakend wall;
weak pull off spring on shoe;
uneven drum roundness;
compensator/proportioning valve dicky.