Warped rotors...not good!

[speedtrip]

Warped or deformed rotors are never a good thing. There are many instances with new vehicles (or new rotors) that when the rotors go bad the source of the problem was that the rotors were not seasoned properly. With a new vehicle everybody is so concerned with the engine break-in, little or no thought is given to the brakes. The tendency is to baby the motor but to use the brakes in a normal manner.

Karl, I would have nissan check to make sure the hub and the wheel flange are still good and to make sure the brakes are not dragging on the rotors. The odds of all four rotors being bad have got to be way out there.

Here's a good article on warped rotors If you have the time it's worth the read!

Suggested Rotor Seasoning by Baer Brakes

[Austin]

Originally Posted by Half Shovel

This warped rotor thing was a big problem with early Tundras (mine had 2 sets of rotors replaced).

My Tundra went through 3 sets of rotors. I finally traded it in because of the brake vibrations.

Listen to speedtrip about seasoning new rotors and bedding new pads - Stoptech and Baer are very good sources of info for brake systems.

[karlconnell]

Originally Posted by speedtrip

Karl, I would have nissan check to make sure the hub and the wheel flange are still good and to make sure the brakes are not dragging on the rotors. The odds of all four rotors being bad have got to be way out there.

Thanks Speedtrip...some great info. I have always been conscious about seasoning the brakes as well. And I do agree that the odds are to small to effect all 4 rotors.

I called two other dealers (service managers and shop foreman) and they said it is Nissan's policy to machine the rotors in these types of instances first. The thing I don't like about that is you still don't know the cause. I have thought about the pads dragging on the rotors but I would think that many others would be having the same issue and that I would be getting worse gas mileage than others as well, and I'm not. I'm going to take it in next Wed to have them do the rears and see if that could be the cause however.

Karl

[JetTech]

Hopefully Karl this is an isolated incident. I've got over 5500 hard miles on mine and so far not one bit of brake vibration at any speed. I would guess your wheels probably weren't torqued evenly at the factory. #@it happens I guess.

[Austin]

Originally Posted by Albert1234

I'll have to check but I believe Nissan specs 98 foot pounds. That seems excessive to me.

Lugnut torque specs are based on the strenght of the wheel studs. What size/thread pitch are Titan wheel studs?

65 ft-lbs is a common value for M12x1.25 wheel studs - I would hope the Titan's studs are larger than M12.



98 ft-lbs is the correct spec -

[outahere]

Originally Posted by karlconnell

Thanks Speedtrip...some great info. I have always been conscious about seasoning the brakes as well. And I do agree that the odds are to small to effect all 4 rotors.

I called two other dealers (service managers and shop foreman) and they said it is Nissan's policy to machine the rotors in these types of instances first. The thing I don't like about that is you still don't know the cause. I have thought about the pads dragging on the rotors but I would think that many others would be having the same issue and that I would be getting worse gas mileage than others as well, and I'm not. I'm going to take it in next Wed to have them do the rears and see if that could be the cause however.

Karl

If the rotors truly were warped, it seems to me that making them thinner (by machining them) will make them more prone to warping in the future.

[karlconnell]

Originally Posted by outahere

If the rotors truly were warped, it seems to me that making them thinner (by machining them) will make them more prone to warping in the future.

I was just speaking with one of the hardware engineers for the company I work for and we both said the same thing.

Hopefully it is something stupid like the lug nuts being torqued incorrectly and not pads rubbing or some other reason.

[tbeecher]

Lug torque is 98..

Funny.. I just noticed the other day that as I come down under 10MPH towards a stop that the steering wheel shakes.. I will have the dealer check them out the next time I get an oil change.

[FLfinfan]

This is an issue on Frontiers as well. Thankfully not mine yet,