Turned front rotors and new pads, now shakes!

[rogjames]

Two weeks ago I turned my front rotors and changed the pads. Now I have a severe shaking when breaking which I never had before. I also had squeaking before but that went away wheb I completely replaced the rear rotors and pads. Should I assume the front rotors should have been replaced and go do that? Is it ok to replace them now and keep the 2 week old pads on the new rotors or are those screwed already? Thanks in advance!

 

[mulletcar]

If they were already warped, I dont recommend getting them turned as you will have thicker and thinner spots and it will warp again very easily.. The only reason rotors should be turned is if there are shallow grooves in them and you are replacing the pads as well. Your pads should be fine as long as they arent worn into a wedge. Just get some 100grit sand paper and sand the glazing off of them.

 

[xlt03]

Replace with new rotors and use the same 2 week old pads. I don't bother turning rotors anymore. Even though you should have enough meat on them and have them turned it usually ends up getting warped and you have to replace them. Why waste you money and time turning them only to have to replace anyways. If you notice they new ones you buy at the O'Reily's, Autozone etc., they are usually made in China even though the box may say Raybestos etc. The weight of the rotors will be a bit lighter than OEM and that to me translate into a thinner rotor that you should not turn. We are now in a use and dispose era. In other words use and replace.

 

[BigRondo]

I can't remember the last time I had drums/rotors turned. I usually by new ones. I don't even know if anyone turns them around here anymore. The cost of the new ones are low enough to not even consider having them turned. I agree with sanding the glaze off the pads and getting new rotors. :biggthump

 

[imp]

In the case of wheel hubs having user-adjustable bearings, such as found in front wheel hubs of 2WD vehicles, incorrect adjustment of bearings can allow rotor "wobble", creating not only unwanted brake sensations to be felt, but also allowing slightly out of balance tire(s) to magnify the feeling.

Rotors must run true, no wobble, and have parallel opposing faces (their thickness must be constant all the way around their periphery) for disc brakes to operate at their best.

Note also many aftermarket rotors have various holes through them, slots, and other gimicry to "enhance braking and cooling", and these marred surfaces contribute little or no effect to shake or vibration. imp

 

[thepotroast]

Make sure your wheel lug nuts are torqued correctly....too many times these shops just slap on air sockets and bolt them down to a "tight" fit. Your lug nut torque specs are 100ft lbs each lug....invest in a torque wrench, it's worth its weight in gold.

Mistorqued lug nuts will absolutely make the wheels shake.

 

[Dunwood]

Disc brake rotors don't warp

http://www.stoptech.com/tech_info/wp_warped_brakedisk.shtml

Review technical white paper by Stop Tech.