slowing down vibrations

I have a 2011 dblcab v6 6 speed. I have started getting a vibration when slowing down from about 5-10 it only does it when i use the brakes or down shift or stop faster than usual. only 25k miles on the truck and just drive to work. gotta own it to wheel it. Brakes were still beefy? 2inch level lift all around. Mt tires.

 

known issue and there is a TSB for it, however, no TSB for free if you are lifted


edit: I think. I might just be stupid.

 

check front rotors....may need to be resurfaced.

 

rotors look good. dont see any scrapes? whats the tsb?

 

you wont be able to see it with the naked eye. you need to measure the runout on them.

 

Yep, sounds like warped rotors.

 

how do they get warpd at 25k miles i drive like an old guy

 

i dont feel the vibes in the wheel and its only at those speeds and its very minor

 

If your brake hard over a short distance, the heat from braking can warp your rotors. I just replaced my rotors for that reason. Fixed the problem though, and there may be other ways to warp a rotor too.

 

With a lift and running Mud Terrains, you are bound to have some kind of vibe.

 

One comment, one question;

Does it only do it when the engine is cold???

Warp rotors can be made by over tightening the lug nuts.