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2007 Toyota Camry Brake Rotor Runout and Brake Specs

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12K views 7 replies 5 participants last post by  craig_AZ  
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#1 ·
Guys,
I'm getting ready to fix a really nasty front brake pulsation problem. I had the original brake rotors turned off the car over a year ago, and the pulsation is getting worse and worse. I broke down and purchased some "high carbon" brake rotors from Pep-Boys along with some Akebono ceramic brake pads.

With a dial indicator I was only able to check the drivers side rotor this evening due to it getting dark. I measured .004 in of run-out of the old rotor. I "pulled" on the rotor and measured about .003 in on the dial indicator. When I checked the hub without the rotor it measured less then 1/2 of .001 (one dial increment) in run-out dial movement.

I plan to measure run-out of the new rotors. But really need to know if the problem is the rotor or the hub. How can you tell?

I have checked on the internet but can't seem to find the exact specs for a 2007 Camry 4 door, 4 Cylinder front brake rotor specs, run-out of both the rotor and or hub, and any torque specs.

Any responses would be greatly appreciated.

thanks,
reezytercel
 
#2 ·
It's a matter of geometry. If the hub is out of round by .001, then the outer edge of the rotor could be out of round by .003, but I also don't think that .001 at the hub is an issue. There has to be a little room for the bearings to move, and I don't think you are going to feel pulsation at the foot with a .003 out of round.

Keep in mind that once a rotor has been turned it is obviously thinner but also heats faster and in so doing has the capability of moving around, so if a cold rotor is out of round by .005, when near red hot it might be out of round by .015.
 
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#3 ·
brakes are now smooth as can be

After checking all the specs, and using my new dial indicator, I checked the run-out on the hubs in the front, pretty much between .000 and .001 and checked run-out with new rotors, measured between .001 and .0015, but well with in the .002 specs that most internet sites state passenger cars are OK with.

Any way just want to let everyone know that these new high carbon rotors and Akebono brake pads are sweet. The cars brake pulsation is non existent and the brakes are smooth as can be. Like driving a new car, as compared to the pulsation that was present before.

FYI... the wifey is happy and that is all that is needed.

Have a great day...
 
#7 ·
Remember the pad choice has a lot to do with it. There were issues where the pads were of a soft composition. This results in premature wear or pulsation. The first TSB called for replacing the rear pads (2007-2008 models) and the second called for replacing front pads, machining front rotors, and verifying pad composition material in the rear (likely to check for the updated pads in the 1st TSB. This was for 2007-2010 models.)


Here are the TSB's:

2007-2008
http://www.tundrasolutions.com/forum...chmentid=37913
2007-2010
http://www.procutinternational.com/pdf/T-SB-0169-09.pdf
 
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