FZ427

Very disappointed, got new rotors power slot new brakes pads Hawk 2000 miles ago and still the vibration under braking on highways speeds, what's the deal ?

dmbfan36_23

are your tires properly balanced? have you had them checked?

I am lookin' to get pads and rotors and am debating whether to get power slots or brembos... 4 power slots will run me about $100 more than 4 brembos. I think I'm doing Hawk HPS pads rather than ceramics.

chhimp

Check the tire balance and pads for uneven wear. Did you break in the pads correctly? Mine worked out great. No shimmy at all, just when in the morning cold it squeaks alittle and then once its warmed up, it is great.

FZ427

Guys guys guys the shaking is only under braking on the highway, on street driving no problems at all. Yes I break them in correctly, drove like my mom for 1000 miles if you know what I mean.

SodaLuvr

Sounds like there's either an excessive runout problem, overheating of the rotors, or improper lug nut tightening (thus causing a runout problem).

Did you clean the hub flange (area which the rotor hat mounts to) prior to installation?

If you did, the issue with your hub/spindle assembly. If the hub/spindle assembly itself has excessive runout, even if your rotor is perfectly true, you will eventually have a pedal pulsation problem as the total runout is still too high.

You need to check the runout with a dial indicator. If it's more than 0.003" of runout, it's too high. You must either resurface the rotor using an on-the-car lathe (so that the rotor is true to the hub) or use runout correction shims.

bhamsan

I get this in the morning. it sucks.

FZ427

SodaLuvr: Thanks for the info, I was thinking it can be hub/spindle assembly.

SodaLuvr

I thiink you can purchase runout correction shims (sometimes sold as "brake align") shims from Napa.

Buy a dial indicator off Ebay for about $35. When measuring runout, be sure to install at least 3 lug nuts and torque them to 20 ft-lbs or so before measuring.

JyeJye

I was thinking of Brembos for my rotor replacement with Hawk pads. I've heard the Brembos can have issues with rust. Any Brembo owners have this problem?

hpsoils

when it comes to bleeding brakes. start at left front and work your way around .like clock.
so it would be L/F,R/F,R/R,L/R .

acuramtereman

Car makes a moaning noise when turning wheel hard left after cold startup, sounds like steering rack or something is not lubricanted well.