GLC63s, GLC63, GLC43 AMG SUV and Coupe (X253, C253) 2015 - Present

limited slip diff vs torque vectoring

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Old 11-21-2017, 03:25 PM
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lotus elise
limited slip diff vs torque vectoring

does the glc43 coupe have a limited slip differential? website says it has torque vectoring which is individual braking of the inside rear wheel to prevent understeer and increase stability. no mention of lsd though

porsche macan gts has limited slip diff as an add on when you order the $1500 torque vectoring option.

thanks
Old 11-22-2017, 08:35 PM
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I don't believe so. I've only seen mention of it on the 63/63s models.
This site has some of the more detailed descriptions of features I've seen.
https://www.mercedes-amg.com/en/vehi...upe/glc43.html

Originally Posted by dr. drift
does the glc43 coupe have a limited slip differential? website says it has torque vectoring which is individual braking of the inside rear wheel to prevent understeer and increase stability. no mention of lsd though

porsche macan gts has limited slip diff as an add on when you order the $1500 torque vectoring option.

thanks
Old 11-22-2017, 08:39 PM
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lotus elise
thanks for link
Old 11-23-2017, 11:32 PM
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Originally Posted by dr. drift
does the glc43 coupe have a limited slip differential? website says it has torque vectoring which is individual braking of the inside rear wheel to prevent understeer and increase stability. no mention of lsd though

porsche macan gts has limited slip diff as an add on when you order the $1500 torque vectoring option.

thanks
That's not real torque vectoring either. When they use the brakes for torque vectoring it's fake because it is reducing the torque that is distributed. Real torque vectoring is the ability to send torque in varying amounts from 0-100% to each wheel. The Porsche can do that and the GLC63S Coupe can do it. The GLC43 has a fixed front/rear torque split ratio with no ability to vary that, and has no left right torque variability. So there is no torque vectoring on the GLC43.

Last edited by stealth.pilot; 11-24-2017 at 03:49 PM.
Old 11-24-2017, 08:29 AM
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How important is it anyway? Maybe 63s with 500 hp needs it but does 43 with 360 hp weighing 4000lbs? Mclaren and lotus both use oped diffs too.
Old 11-24-2017, 03:53 PM
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Originally Posted by dr. drift
How important is it anyway? Maybe 63s with 500 hp needs it but does 43 with 360 hp weighing 4000lbs? Mclaren and lotus both use oped diffs too.
To most people it will make no difference. It only makes a difference when taking a corner extremely fast.

In my 911 Turbo S, I have to drive the car at a speed which is beyond the ability of the tires to take the G-force, and at that point when you think it is going to understeer, the torque vectoring will kick in and keep the car in the cornering line. The speed to trigger this is really high, and it requires an degree of faith in the cars ability to handle the centripetal force which is not going to feel natural at first. But once you do it a few times, you will realize the car can carry an insane amount of speed through the corner when torque vectoring is active. It's fun on race tracks, and it's fun on those favorite high speed corners which you can get away with taking fast (e.g. 3 lane mountain passes).

BTW the value of torque vectoring in a heavier SUV is more than in my 911, because the 911 can carry a lot of speed through a corner without torque vectoring. But the SUV cannot, and so the threshold at which the torque vectoring kicks in to counter understeer is lower and more accessible on the GLC than on the 911.
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Old 11-24-2017, 04:00 PM
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lotus elise

​​​​​​​good points. Makes sense. Thanks
Old 11-24-2017, 09:28 PM
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Plus if you're an aggressive and, um, less than good/inexperienced driver, hauling around the track with esp on and the wheels being constantly braked and freaking out to keep you on the track will f your brakes up real fast.
I was talking to someone the other day that said a guy who rented their M3 did enough damage to require $3000 in repairs to the brakes in 6 laps. Ouch lol

Originally Posted by stealth.pilot
That's not real torque vectoring either. When they use the brakes for torque vectoring it's fake because it is reducing the torque that is distributed. Real torque vectoring is the ability to send torque in varying amounts from 0-100% to each wheel. The Porsche can do that and the GLC63S Coupe can do it. The GLC43 has a fixed front/rear torque split ratio with no ability to vary that, and has no left right torque variability. So there is no torque vectoring on the GLC43.

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