Uneven brake pad wear

Brianscott · Post by **Brianscott** » 26 Jun 2018, 12:17

Hello i got some uneven brake pad wear going on at the front brakes. The front drivers side brake pads still got plenty of meat on them, but the passenger side is completely gone now. What could cause this sort of issue?

Post by **abscate** » 26 Jun 2018, 12:30

Brake caliper is sticking on passenger side. If you haven't changed your brake fluid every 2 years, that is likely the cause

Brianscott · Post by **Brianscott** » 26 Jun 2018, 12:37

Would bleeding and changing fluid fix it?

Post by **oragex** » 26 Jun 2018, 12:50

Can we assume all pads were the same brand and installed at same time?

Could be a few things. I would go with stuck valve inside the ABS valve unit. But also check if the piston slides properly inside the caliper, if the flex hose to the caliper has cracked, if the sliding pins move relatively easily.

WhatAmIDoing · Post by **WhatAmIDoing** » 26 Jun 2018, 13:28

If inspection reveals nothing, put the thicker pads on the opposite side, take a short break in drive, then jack up the front and check for brake drag. With excessively uneven wear, it's hard to check for drag if nothing left on one pad. A bad brake hose or sticking caliper are likely suspects. Does it pull to the side when braking? What is your driving style? If you brake hard in turns, it is possible for one side to wear more than the other, especially if you primarily make left turns. Also, what pads are you using? Cheap pads mean less quality control, which can result in uneven wear.

Brianscott · Post by **Brianscott** » 26 Jun 2018, 13:48

I used akebono pads and i replaced them all at the same time. I brake relatively slow not hard. Also i put a rebuilt abs module in it a year ago.

Brianscott · Post by **Brianscott** » 26 Jun 2018, 13:50

What is the abs valve unit?

Brianscott · Post by **Brianscott** » 26 Jun 2018, 14:02

Oh and also its the outer pad that is wearing and the inner pad has life in it still

MDK · Post by **MDK** » 26 Jun 2018, 14:52

MDK here... I concur about the guide pins. But the caliper itself maybe at fault. I would clean and regrease the pins first... process of elimination,

Brianscott · Post by **Brianscott** » 26 Jun 2018, 14:59

Sounds good. Im going to get my brake fluid flushed after i replace the pads and grease the pins. What kind of grease do i use?