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Re: Worried that I'm damaging my AWD Infinti [Re: OhioMazda] #4987012 01/21/19 08:37 PM
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Cujet Offline
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Even the viscous systems will tolerate a typical tire mismatch. The spare tires on many AWD vehicles with viscous couplings is often not the same diameter. The amount of "slip" the coupling has to endure is very minor.


People who count on their fingers should maintain a discreet silence.
Re: Worried that I'm damaging my AWD Infinti [Re: OhioMazda] #4987015 01/21/19 08:42 PM
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PeterPolyol Offline
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Seems like a fully clutch-based torque delivery system anyway, so that clutch is always slipping at any command lower than 50%, regardless. In this case if the TCS is happy with the wheel speeds then it's probably fine

Re: Worried that I'm damaging my AWD Infinti [Re: Cujet] #4987204 01/22/19 06:33 AM
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krzyss Online Content
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Originally Posted by Cujet
Even the viscous systems will tolerate a typical tire mismatch. The spare tires on many AWD vehicles with viscous couplings is often not the same diameter. The amount of "slip" the coupling has to endure is very minor.


They are called temporary spares for a reason. I think the limit is 100 miles.
So you can drive mismatched tires for 100 miles and then cool the system ;-)

Krzyƛ

Re: Worried that I'm damaging my AWD Infinti [Re: benjy] #4987374 01/22/19 09:25 AM
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Originally Posted by benjy
there are MANY variations of AWD systems + most only activate the rear as needed + run in FWD mode for meeting EPA mileage standards. 4 real snow tires-winter tires will do as good or better than most AWD cars using all season but winter tires IMO. i regularly passed struggling AWD + 4 WD vehicles in my 2001 Jetta with snow tires in some rough Pa winters, guys on the job with their gas guzzling 4 wheel tanks-trucks could not believe how well my little car went.


This topic is about Infiniti, before their AWD systems got infected by Mercedes-Benz, which is RWD until the front wheels are needed.


2016 VW Tiguan|APR Stage 1|Neuspeed P-Flo|Osram CBI|Redline 5w30
Re: Worried that I'm damaging my AWD Infinti [Re: skyactiv] #4988102 01/22/19 11:53 PM
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Originally Posted by skyactiv
Here's the deal, many a Subaru owner messed up their center diff by having mismatched tires and didn't know it until their car had lousy traction in the snow because the vehicle was now front or rear wheel drive, depending on the mood.


I'm surprised that they didn't know it, the steering will bind when turning with tires that are mismatched enough to make the diff unhappy.

I've always been careful about running tires within 2/32" of each other on my Subaru, but my center different still went bad at around 200k. When my transmission was warm, I'd get a loud clicking noise when turning at lower speeds. Wasn't the cv axles either, was very much temperature dependent, new center diff fixed the problem.

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