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Old 03-04-2016, 03:32 PM
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Brakes and rotors issue

Has anyone had to change their fronts? Mine got warped about 10k miles ago only affects at highway speeds I do a lot of city driving is this a common issue my sister has the same issue on a 15 Cherokee

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Old 03-05-2016, 12:17 PM
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Re: Brakes and rotors issue

I seriously doubt they are warped. It's very hard to do. The vast majority of the time what happens is uneven deposits of friction materials make it feel like the rotor is warped but it is simply a variation in friction as the rotor turns. It's more common in stop n go vehicles as hot pads sit and clamp on hot rotors without moving.
So what's the fix? It's usually easy- repeat the bedding in process a half dozen times. This will clean and even out the friction material that has been transferred to the rotor.
I have an article bookmarked around here somewhere that goes more in depth on this. The gist is that the braking force is not necessarily generated by the pad against the steel rotor. Rather, pad material is embedded in the rotor as the pad wears. The "dual compound" of steel and pad is what really generates the force of braking. For instance, my street bike rotors are all shiny but the race bike rotors are black. This is because the race bike gets so abused more pad material is deposited on the rotor.
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Old 03-07-2016, 12:30 AM
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Re: Brakes and rotors issue

If indeed your rotors are warped (as was common on 99 WJs) the new parts are cheap enough.
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Old 03-07-2016, 02:09 AM
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Re: Brakes and rotors issue

The rotors on my 2000 WJ warped before I got to 20000 miles. I replaced them with Stillen cross-drilled rotors and never looked back.

Looks like they don't currently list rotors for the 2014 WK2, though...
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