Infiniti - G35 :: 2005 - Slotted Rotors Rumble / Vibrate?


Oct 7, 2011

I have a 2005 Infiniti G35x. I just replaced the stock rotors with EBC slotted rotors and "green stuff" pads. The brakes work great - much better than my old worn out stock brakes. The problem I'm having is when breaking at a slow rate (say slowing from 20 to 0 at a stop sign) I feel a pulsation/vibration (it's not a sound, I can't hear it, just a feeling) in the front rotors. It's not a warpped rotor feeling, and it doesn't happen at higher speeds. The best I could describe it is the feeling you get when you ABS kick in - only much more subtle. So my question is - is this normal? One mechanic said I was feeling the slots as they went around.

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I'm going to replace the rotors & pads on the X, was doing some research and read where slotted and drilled rotors actually create weak points in the rotor for vehicles this heavy.

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Cavalier - Vibration - Chevrolet :: 1992 - Rumble And Vibrate While Idling In Drive

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Infiniti - G35 :: Random Vibration When Driving Over A Smaller Version Of Rumble Strips On Side Of Road

My 2005 Infiniti G35 has 144,000 miles, two new rear tires and two good front tires. Sometimes, and I cannot nail down or reproduce-on-demand this situation, my car will suddenly begin to vibrate as if I'm driving over a smaller version of those rumble strips on the side of the road. The vibration continues when I take my foot off the accelerator, and will continue at a slower rate as I decelerate until I stop. Often it seems that when I come to a dead stop and accelerate again, the vibration stops, but other times it will continue as I accelerate.

But what's really odd is other times I'll just be cruising along and the vibration will begin, keep vibrating for a few miles, then peter out and disappear. I haven't totally nailed down whether or not braking affects it, but if pressed I would say that I would use the brakes at least once before it disappears. Also, it only seems to begin once I hit 50-60 mph, but again, it doesn't happen every time I go this speed. Other times this car drives incredible and makes the road feel as smooth as glass.

I haven't taken it to the shop because I'm sure they won't be able to reproduce it.

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I did run seafoam through it and it was fine for about a day, then started vibrating again.

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Lexus :: 2005 - Steering Wheel Started To Vibrate As Tire Is Flat

I was driving my wifes 2005 Lexus 330 on an Interstste between 65-70 mph. Suddenly the steering wheel started to vibrate as if I had a flat tire. I pulled over, checked-no flat. Cautiously started slowly then picked up speed til I was at 65 again. No problem. Drove all the way home (150 mi) next day, no problem. About 3 weeks later, the same thing happened to my wife on an interstate. Sje stopped, checked, no flat. Started up cautiously, then faster. A ll OK. Came home-no repeat of the problem. Took it to our dealer. Up it went on the lift. Diagnosis: 2 tires had steel belts that were out of shape and the car needed a slight alignment. $800+ bucks. A week later, on an interstate, she had a repeat of the problem. Lexus took the car and the service guys took turns drvng it home at interstate speeds. Couldn't get a repeat of the problem. I don't know if this would have any bearing on the situation, but the only thing we've done out of the ordinary is use regular gas about 3 of every 4 fill-ups ...

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Avalon 2005-12 :: Getting Shudder On Braking - Brake Rotors Being Warped?

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Civic - Honda :: 2005, Car Is Pulsing Badly After Replaced Pads And Rotors

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Ford F-150 (2004-2008) :: 2005 - Brakes Shimmy After New Pads And Rotors

Brakes shimmy on my 05 f150. Been doing this since new new pads and rotors and alignment. what now?

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Ford F-150 (2004-2008) :: 2005 - Rumble At Idle?

my 05 f150 5.4 with 76,000 has a weird rumble at idle, I don't think its a miss and there's no codes and when I put it in park it goes away or if the idle changes just a little you don't feel it. And you feel it through the brake pedal the most its not real bad butb enough to bother me.

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Ford Super Duty (1999-2016) :: 2005 - Nasty Wobble When On Brakes - Warped Rotors

Brake issues on 2005 F250. About 3 years ago during vehicle inspection the garage stated I need all for rotors on my F250. I had @40,000 miles at the time. Garage said rotors are a onetime use, no recutting them. So I got all new rotors. Prior to then I never even felt a wobble indicating they were warped. Anyhow now with 15,000 miles on them I have a huge wobble when I get on the brakes and it's 5x pronounced when pulling a trailer. I assume more warped rotors. If so, why? I pull a camper or car trailer maybe 7-10 times a year.

Now currently I am assuming its warped rotors because I have not had it "professionally" checked. I did have one occasion last August pulling the camper where I smelled the brakes being hot. The pedal got soft. After cooling it seemed ok and I flushed the old fluid and put in new. I have about 4100 miles since then and the warped feel just started about a month ago. I hate the thought of new rotors as I paid for new Ford rotors 3 years ago. Didn't want the Chinese crap from the box stores. I can't imagine how these would warp this bad after less than 15,000 miles, they are massive. Why they would so quickly?

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Ford - Expedition :: 2005 - Shutter Like Driving Over A Rumble Strip When Apply Little Throttle

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Camry 2012+ :: Vibrate At Idle With AC On?

Wifey has been complaining the past 2 days that her car has been running a bit funny. First warm-ish day here...sitting in traffic and turned on the AC. At a complete stop, in Drive, the car is vibrating the floorboard quite noticeably. Somewhat less noticeably in park/neutral. Otherwise, it seems to behave just fine...power is fine, motor sounds like it always does.

The car was about 3/4 of the way through the tank of gas (87 oct), and wasn't running like this a few days ago when I spent a lot of time behind the wheel. I went and filled the tank, thinking maybe it was bad gas, with a fresh tank of 89. Nope...as soon as you hit the AC button...it starts vibrating.

So the question from all this...does YOUR I4 Camry shake a little bit with the AC on? A little bit of vibration from a 4-cyl doesn't surprise me, but I sure don't seem to recall it last year.

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So far this is what I have had it:

-Aligned and balanced tires twice.
-Had inspected and replaced both of the axles with new OEM parts.
-Had overall suspension inspected and everything seems fine.
-Checked the bearings by two different professionals, one used a dynamometer. came out fine

So far nothing has worked, and I am afraid or actually in denial that it might be something major with the transmission. I've researched and read various post around the web but i have not found anything beyond checking and/or replacing the the aforementioned parts.

I inadvertently hit 85 mph driving on an downhill interstate road and the vibration stopped, but came back again as soon as I slowed down to 60-80. Lets me to believe that there is something wrong with one of the transmission gears, probably 3th or 4th.

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As spring approached and the temperature started to rise, I put it back on and it appeared to work fine no vibration and plenty of cool air.

Occasionally (one or twice over many 1000's of miles) it would do it, but cycle it off/on and it went.

I figured it was probably the serpentine belt that needed replacing - which happened on the service last month, they advised it was worn so I was right to replace.

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A small edit after submitting - I'm assuming it HAS an automatic belt tensioner that is based on some spring mechanism - can't believe you'd have to adjust these manually?

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I didnt feel any overwhelming heat coming from that may occur from bad hub bearings, when I spin wheels do not hear any unhealthy sounds nor is there any play on hubs but I am replacing them also anyway. Is he correct about the possibility of bad bearings in front diff and not uncommon for them to fail? Also, Side note I am also installing torsion bar keys to lift front about 2.5". Should I get extended sway bar links to replace originals or would stock be fine?

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