Rotors Re Surfaced Twice in 20k Miles?

GOFAST24

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Car
2011 FX35 RWD
I am giving my middle son my FX50S and buying a used 2011 FX35 RWD. In reviewing the service records on the 35 I noticed that the rear rotors had to be turned at 6900 miles and 22k miles but nothing done to the fronts? The previous owner complained about the steering wheel shaking while braking? I would think it would have been the front rotors? Is this rear rotor resurfacing a common problem on the FX35's? I am trying to get the Infiniti dealer to replace the rear rotors before picking it up on Wednesday. Any comments would be appreciated, thanks!
 
Yeah im guessing the rotors are warped. They should be able to tell but I don't think resurfacing would do much you need new rotors over all so yes I would have the dealer replace them. If that doesn't fix it, it should still be under warranty and they should replace the fronts.
 
Normally if you have to re-surface rotors, it can only be done once because only so much can be removed before they reach their minimum thickness. If they need to be done again then they are replaced. So I would get the Dealer to replace them if they have been machined twice.

If there is a shake in the steering wheel, then I agree it is possibly the front rotors, that will have to be machined or replaced.

Your middle son is a very lucky boy to be getting the 50 from Dad.
 
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Make sure that when the wheels are getting put back on the car that a torque wrench is being used. Over-torque is a major cause of brake rotor warpage. 80 ft-lbs according to the FSM.

If the rotors have been machined twice now they most likely need to be replaced.
 
I would first find out the cause of getting the four rotors wrapped so soon before putting on new rotors, if it was abuse by the previous owner (extremely heavy and frequent braking at high speeds or driving on sand or snow regularly for prolonged periods of time) then you can safely replace them, however if the issue is hardware (stuck pistons, damaged brake lines, ... Etc any thing that causes rotor overheating at normal driving conditions), then better to fix that otherwise new rotors will warp so soon too.

And I agree with the guys, new rotors are most definitely better and safer than rotors that are machined twice and likely out of tolerance, remember to put new pads with the new rotors, never use the old pads with the new rotors.


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i agree with Ataher. I machined my stock 9 year old rotor twice and doesnt feel the same. I have warpage, i brake hard especially at high speeds.
 
I am giving my middle son my FX50S and buying a used 2011 FX35 RWD. In reviewing the service records on the 35 I noticed that the rear rotors had to be turned at 6900 miles and 22k miles but nothing done to the fronts? The previous owner complained about the steering wheel shaking while braking? I would think it would have been the front rotors? Is this rear rotor resurfacing a common problem on the FX35's? I am trying to get the Infiniti dealer to replace the rear rotors before picking it up on Wednesday. Any comments would be appreciated, thanks!

I would have the dealership change the front rotors/pads and rear rotors/pads, or if you are handy, discount the price of new oem rotors/pads w/ labor cost from the overall price of the FX being sold, and do the brake job yourself. The fronts need to be changed or at the very least checked. The vibration could be from unevenly torqued wheel nuts, however the ABS could be the cause of the previous owner's shaky steering wheel concern. I would play it safe, and install new pads and rotors on the front and rear.
 
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Imho resurfacing any rotors is always a temporary fix and will eventually lead to steering wheel shake again. Every time I resurfaced it never fails to come back. I actually had steering wheel shake myself and just swapped out my two front rotors for a power stop Z kit today. The shake is completely gone and the brakes are awesome. I'd push the issue and try to get them to swap rotors. Good luck
 
Thanks for all the replies guys! I will discuss this with the dealer tommorow when I pick up the 2011 FX35. The only thing I will miss on the FX35 will be the power of the V-8 and the paddle shifters. All that LDW, FCW, adaptive head lights, adaptive cruise control, rear wheel steering, etc. I never really used or liked anyway. The 35 does have cooled seats though which I do like.
 
Thanks for all the replies guys! I will discuss this with the dealer tommorow when I pick up the 2011 FX35. The only thing I will miss on the FX35 will be the power of the V-8 and the paddle shifters. All that LDW, FCW, adaptive head lights, adaptive cruise control, rear wheel steering, etc. I never really used or liked anyway. The 35 does have cooled seats though which I do like.

The 50 does as well
 
Thanks for all the replies guys! I will discuss this with the dealer tommorow when I pick up the 2011 FX35. The only thing I will miss on the FX35 will be the power of the V-8 and the paddle shifters. All that LDW, FCW, adaptive head lights, adaptive cruise control, rear wheel steering, etc. I never really used or liked anyway. The 35 does have cooled seats though which I do like.

Np. The cooled seats are a nice feature, however my old M35 cooled seats used to give me a funny sensation, like my butt was wet, after it was on for a while. LOL
 
Resurfacing only mitigates the problem. If something is causing the warping, then it's going to come back.
 
yup, overtightened or unevenly tightened (not tightening using criss cross pattern) will lead to warped rotors.
 
The dealer indicated that the rotors are still within factory tolerance and as I have more than 2 years and 37,000 miles left under factory warranty if it happens again they would replace the rotors and pads at N/C. Cant argue with that? The car looks and runs great! I thought the previous owner would of left some music on the "music box" but it was wiped clean. I wondered where the car came from so while re setting my "Home" location on the Nav it popped up a home address in Florida! So now I have the previous owners address, not that I need to contact him or anything. Also, that explains the somewhat excessive oxidation of the aluminum components of the engine. My 09 50S was spotless on all the aluminum under the hood.
 
I did not know that "warranty" could be resurfacing of rotors, it sounds odd, I expected them to replace if they are warped and not resurface them as a "warranty" procedure. I maybe wrong.

Resurfacing is an option for someone like me, where there is no warranty even on new cars. I am paying regardless.


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Yea just replace the rotor. You should be good

---------- Post added at 06:40 PM ---------- Previous post was at 06:32 PM ----------

Bad rotor from the manufacturer. Seen it a couple of time
 
i think changing rotors to premium drilled ones or slotted is a better option. Resurfacing rotors will lead to warpage faster then buying a new set of oe rotors. This is all based on if your driving hard and braking hard frequently.
 
Having it at the dealer to fix the shift problem (hard getting out of park, I posted this problem in another thread) they measured the rear rotors at 14.3 mm left and 14.7 mm right side. New spec is 15 mm per the mechanic so they seem to be well within the minumum thickness? Forgot to ask what the minimum is, anyone know? Also, service writer reminded me that warped rotors and worn brake pads are not warranty as I originally thought! Driving the 35 is quite a bit different from my FX50S, I still am reaching for paddle shifters which I no longer have on the 35. Is it possible to add paddle shifters and is the wiring harness already in the steering column?
 
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