chhay24

the title says it all... speed around 80 km/h +

some additional info:
Got it and used it for since last summer.. it is R1 concepts PREM.

did some research could the the rotors are wrapped already...?!?!?! from what i've heard from then they are very good rotors

what are the possible problem ?

Oh.. if it makes any different. i did installed it myself.. everything went smooth..


thanks in advance guys

bmwroger1

it could be a couple of things. assuming you do not feel vibration in the steering wheel and only on the brake pedal or in the floor area or in your seat. the rotors could have been already out of round when you purchased them. also did you clean and lubricate the caliper sliders and caliper braket where the pads sit. if they were cleand or lubricated this could cause uneven wear on your pads and will also cause vibration in you brake pedal. depending on the condition of you previous rotors. the pads were already worn to the grooves of the original rotors. when u put new rotors on, that could cause your pads to form a new wearing pattern. which could also be a problem. good luck and keep us posted

acuteperformance

roger gave a lot of good suggestions! how did you break in the pads? if you didn't break in the pads & rotors properly that could cause premature wear.

you need to do 3-4 hard stops from 45-35-45 miles. this way it creates a layer of brake pad material between the pad and the rotor. if you don't do this it'll create a pad to metal scenario which can lead to heat spots eventually causing uneven rotors.

michael
acute performance

chhay24

I do feel the vibration in the steering wheels. in fact, there are alot of vibration on the steering wheel. again only vibrate at higher speed.

So, the steering wheel also vibrate does it mean the rotor is wrapped?



I shall try the hard stop..!

I will let you know the result.

acuteperformance

If your rotors are warped, doing the hard stops won't help you. You'll need new rotors.

chhay24

so there are vibration in the steering wheel, means that my rotors are wrapped? how do i confirm it?

thanks

Oh, i also replace the pad when i change the rotors

acuteperformance

Usually when your rotors are warped, you only feel vibration from the brake pedal. You might have another problem. Are you using OEM wheels or aftermarket?

Michael
Acute Performance

gbaty0001

Mine is doing the same thing, thats why I ordered the Hawks and new rotors, hopefully thats what the cause is.

acuteperformance

I hope that's not the only reason because I don't think his vibration issues are due to warped rotors.

turboawd

you could have other issues, such as sloppy wheel bearings or loose suspension components that could cause a whobble, but my money would be on the rotors being warped.