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Re: Worried that I'm damaging my AWD Infinti [Re: OhioMazda] #4987012
01/21/19 09:37 PM
01/21/19 09:37 PM
Joined: Feb 2003
Posts: 8,535
Jupiter, Florida
Cujet Offline
Cujet  Offline

Joined: Feb 2003
Posts: 8,535
Jupiter, Florida
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 09:42 PM
01/21/19 09:42 PM
Joined: Mar 2016
Posts: 1,719
Toronto
PeterPolyol Offline
PeterPolyol  Offline

Joined: Mar 2016
Posts: 1,719
Toronto
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


There's no replacement...'scosity for natural viscosity
Re: Worried that I'm damaging my AWD Infinti [Re: Cujet] #4987204
01/22/19 07:33 AM
01/22/19 07:33 AM
Joined: Feb 2012
Posts: 478
MA, USA
krzyss Offline
krzyss  Offline

Joined: Feb 2012
Posts: 478
MA, USA
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 10:25 AM
01/22/19 10:25 AM
Joined: May 2008
Posts: 2,428
Parts Unknown
UG_Passat Offline
UG_Passat  Offline

Joined: May 2008
Posts: 2,428
Parts Unknown
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
01/23/19 12:53 AM
01/23/19 12:53 AM
Joined: May 2004
Posts: 2,514
Northeast
sxg6 Offline
sxg6  Offline

Joined: May 2004
Posts: 2,514
Northeast
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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