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Towing 5000 lbs with the Sorento - Myths and facts

148K views 441 replies 64 participants last post by  Tripplec  
I do not beleieve Kia made up the maximum towing numbers. But they also do not dicuss emergency stopping and the like and possible degradation to the engine and transmission. Because you can, does not mean you should. The speedometer goes to 160mph. Would anyone in their right mind recommend cruising at 160mph? Can the Sorento even go that fast? If I needed to tow something down the road, or a rare short term heavy tow, I think the AWD V6 Sorento could. For example, a disabled car that I can't get a tow service for. If I could hook it up, I could probbaly tow a car real slowly some distance with this Sorento (with a proper hookup).
You're right they didn't make up those numbers, their engineers provided them specific to the vehicle and published in the owners manual.

The manual does cover emergency braking and the demand on the power train and that it will require additional maintenance.

I don't understand the correlation between the speedometer range, the max capable speed and the published towing limits.
 
The 'bucket and shim' style method of managing valve lash on these engines doesn't offer any adjustment. You'd have to replace parts.
Agree with above -- more likely pre-ignition than valves. Would indicate that the engine is operating just beyond what should be its allowed timing advance in the table, so I wouldn't make a habit of it. Normally, the knock sensors should hear this before you do and back off on the timing a bit. Premium fuel will allow the ECU to dive a little deeper into the table on the advance curve without knocking, so that may indeed be something you want to try next time.
I'm not sure but expect these vehicles will have bucket style, but hydraulic.

There's a minor performance hit with hydraulic lifters and that's the reason you'll still find the bucket shim style of performance applications - my BMW motorcycle with twin overhead cams clearance is adjusted by complete bucket replacement, which means lifting the cams and dropping in a new bucket.

My two Fords are also twin overhead cams with buckets and hydraulic.