Stock rotor runout easily?

[ym0bc1]

2021 JL rubicon, 13K mileage.
We only drove it on weekend and some off-road trails. Got a dial indicator so tried to do some play around.
Testing on front rotor - it’s about 4 thou range of move. Seems a bit high. Thoughts? Or normal?

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[roaniecowpony]

Too much. It will pulse at that amount. Most specs for rotor runout are around .001-.002" .

So....why are you testing the rotor runout? Did you test the flange runout? Sounds like you did something severe and are checking for damage.

 

[ym0bc1]

Too much. It will pulse at that amount. Most specs for rotor runout are around .001-.002" .

So....why are you testing the rotor runout? Did you test the flange runout? Sounds like you did something severe and are checking for damage.

I was just rotating tires, and in the same time I received my indicator in the mail. So just out of curiosity I did a test.

 

[roaniecowpony]

I was just rotating tires, and in the same time I received my indicator in the mail. So just out of curiosity I did a test.

This is a great video on how a great mechanic does brake jobs

 

[ym0bc1]

This is a great video on how a great mechanic does brake jobs

Thanks.
Just realized that I should have used lug nut to tighten the rotor before testing the runout, which I didn't.

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