Hey guys... so i've been replacing brakes all my life in all cars i have owned, specially on my own SC and ES.

My SC has been getting a slight vibration while braking, so since the pads are still new, i have decided to just resurface my rotors.

Got them resurfaced, put them on, and they shake even worse than before....!

So... what did i do wrong here?
is it because i didn't replace my brake pads? I double checked and i put everything back together like it should.
My brakepads still has at least 70% on them.

Any help appreciated. Thanks in advance.

 

If you're only feeling vibration during braking then it's definitely a combination of your rotors and calipers fighting each other. 70% of brake pad is a lot though. Even though your rotors are "resurfaced", they can still be warped to a point. Is it coming from one wheel specifically or all of them? Did you flush your brake fluid?

 

Yes.... brake fluid was flushed. I have good pressure on the brake pedal.
This is the first time resurfacing the rotor so I would've thought that the rotor would still be ok.
I had it resurfaced because i was getting a slight vibration on the rotors, but after resurface, it shakes like crazy!

would you say its a bad rotor or brake pads? i would guess the pads should be fine since it does still have a lot of life left..

Darn. im confused...

 

im gonna say its a warped rotor.

 

warped rotors cannot be fixed by resurfacing?

 

read what tabaka posted before.

 

If the rotors were not resurfaced properly, it could cause the vibration to be even worse. When turning rotors, two "check" cuts are made. The first cut is with the rotor initially mounted on the lathe, the second cut with the rotor rotated free from the hub assembly 180 degrees, cut again with the bit in a new location away from the first. If both cuts are lined up in the same area, you then successfully centered the rotor.

If someone just mounted the rotor and began cutting without making the "check" cuts, there's a chance the rotor was misaligned on the lathe while being cut.

Warped rotors can be fixed by resurfacing, but the result is more prone to warping since there is less material.

 

You could also have loose / worn front suspension components... when braking, you are putting a twisting force and potentially causing one of them to move into a position that causes a shake...

so, check the rotors, of course, but, while the car is in the air, grab the wheel and shake it left to right (for tie rod ends / steering), shake it up and down (ball joints / bushings) and try to lift straight up on the wheel/tire assembly with a 2x4 or crow bar (to check for ball joint / bushings)...