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Unread 04-18-2013, 07:15 PM   #1
bluehorizons
Junior Member
2011 WK 
 
Join Date: Jul 2010
Location: Alexandria VA
Posts: 30
Towing capacity & Transmission Temperatures

Hi folks. A couple questions I am hoping someone can answer please. Firstly, what are the determining factors in calculating towing capacity for vehicles? How much of it is torque / hp vs vehicle weight, frame strength, etc? Secondly, what drives transmission temps? I recently towed and watched the trans temp pretty closely and didn't really see any major variances from my non-towing driving, with the exception of when trying to back up with the loaded trailer up a hill. Thanks in advance.

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Unread 04-18-2013, 07:48 PM   #2
Kev M
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2012 WK 
 
Join Date: Jan 2006
Location: Medford, NJ
Posts: 668
Lawyers and perceived potential liability plays a huge part as identical vehicles often carry higher limits outside the US.

Brakes and suspensions are included in the logic as well.
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Unread 04-19-2013, 04:49 AM   #3
LouC
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2007 WK 
 
Join Date: Feb 2008
Location: NY
Posts: 1,298
Can't answer how they calculate tow ratings but I know the thing that drives up trans temps is when the torque converter slips on take off. So stop n go driving where the torque converter does not lock up will really heat the trans fluid. When I towed our boat with my 98 ZJ I locked out overdrive to allow the converter to lock up in third.
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