Wheels & Tires Grabbing the road and stopping.

highway vibration

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Old 04-14-2009 | 02:26 PM
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highway vibration

new wheels and tires didn't fix the vibration on my 06 G35. The dealer is recommending they tighten or replace the steering rack (at their expense) any thoughts?
 
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Old 04-14-2009 | 02:45 PM
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let them i haven't experienced anything like this so idk.
 
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Old 04-14-2009 | 04:37 PM
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I get the same vibration from 65 to 80 and I have an 06 coupe. Let me know if the steering rack helps. I kept thinking it was the alignment, but it still does it.
 
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Old 04-14-2009 | 04:44 PM
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I've had two sets of tires put on, then they tried a new set of wheels and tires off an '09 G along with an alignment. I'm convinced the vibration has nothing to do with wheels and tires. I'll know if the steering rack fix is the issue in a couple of days.
 
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Old 04-14-2009 | 04:48 PM
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Well, if it turns out that it is not the steering rack, you might want to check the axles b/c that is what was causing the vibration on my wife's 03 honda accord.
 
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Old 04-15-2009 | 04:58 PM
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Use a vibration analyser to view the frequency of the vibrations this will tell you the diameter of the culprit. A 26" tire at a speed has a certain frequency [and harmonics] of vibration. Simple college physics.

You must use software and a frequency analyser that can accurately measure 10HZ to 100 HZ.................most vibrations are 10>30 Hz and in audible by human ears but easy to see on acoustic FFT anaylser.
EVA or Vetronix [now Bosch] vibration analyzer
http://www.boschdiagnostics.com/TEST.../Analyzer.aspx
http://www.ymec.com/hp/signal2/car1.htm
 
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Old 04-23-2009 | 01:17 AM
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Just wondering if you ever determined the cause...

I know the techs at the only Infiniti stealership near me don't have either of the instruments above...and they are a ROYAL pain in the *** to deal with...

I am def pos it is not the tires, wheels, or alignment on mine either; however, I am beginning to get the rear axle click and if the axle is loose, that may be the culprit
 
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Old 04-23-2009 | 03:52 PM
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Call the Lexus dealers many of them have diagnostic equipment.
 
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Old 04-23-2009 | 07:28 PM
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turned out to be the drive shaft. They replaced it and all seems o.k.
 
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Old 04-28-2009 | 06:28 PM
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Was it the pass or driver side or both?

That's what happened to my wife's 03 V6 accord coupe. Turned out the inner drive shafts are made with really cheap parts and they seem to fail pretty frequently so I ended up getting brand new gator axles.
 
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Old 05-11-2009 | 05:37 PM
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Wow seriously it was the driveshaft.. Thats what I think is wrong with my car because you can definitely feel it in the shift **** around 60mph deceleration, it feels like the driveshaft is vibrating really bad, I checked my wheel bearings and they are most definitely okay, it doesnt move whatsoever.. my god I have aftermarket warranty will definitely not cover that im sure.. Is that consider as wear and tear or what?? How many miles on your G
 
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Old 05-11-2009 | 07:12 PM
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yeah, couldn't believe it myself. The "U" joint was binding up so they replaced the whole shaft. Covered under warranty. The car has about 50k miles.
 
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Old 05-11-2009 | 07:25 PM
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Well I hope it is.. I got aftermarket warranty.. hope its covered
 
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Old 05-12-2009 | 11:37 AM
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Important to exercise u-joints [periodically with a hammer] so that they do not bind up, become notchy and do their job.
Something known to happen to driveshaft since the 1960's. Some last 50k some 150k.

Every wonder why each medium sized city has at least one driveline shop that specializes in rebuilding and rebalancing abused driveshafts.

People who grew up on FWD have no concept of RWD/AWD problems and solutions.
 
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Old 05-13-2009 | 08:22 PM
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1 piece driveshafts hurt my feelings..
 


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