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Turn off the traction control fully by holding it down until it says off.
Find a quiet space and hold the brakes on gently.
Floor it in manual mode for a few seconds.
Get out and see if there are 2 tyre marks or one.
Two = LSD
Surely if you were the kind of driver who might need an LSD then you would also be the sort of driver who could tell by the way that the car drives?
Also totally wrong.
Might have one fitted aftermarket and a Quaife is the most popular where the wheels still turn in opposite directions.
I know you can do 11s with an open differential but I actually described a burnout. That is far more likely to result in just one wheel spinning because with an open differential as soon as one wheel spins more power goes to that spinning wheel and the brake will hold the other wheel still.
The question was do I have an LSD and he'd already said it's not on the options list so I tried to answer all possibilities. It's actually quite difficult to confirm for sure as debated here.Your still wrong too if you think you cant do a two wheel burnout without an LSD. Wow look my non lsd below, only looks like one mark
Plus I was correct then as I was assuming he was asking if he had one fitted from standard when the car was new.
In my experience of owning Biturbo E63's with an open diff. a Quaife Torque Biasing diff. and an AMG Locking diff (the clutch type), it's easy to tell if you have the clutch-type LSD as you will feel the inside rear wheel pushing / scrubbing in tight low-speed turns.The spin the wheel off the ground test only confirms if you have a clutch type LSD. There could be a geared torque biasing differential (strictly speaking not actually an LSD) that still spins the wheels in opposite directions.
When I swapped the open diff. for a Quaife the most obvious difference was exactly that: more thrust off the line and out of slow corners, but without the pushing / scrubbing in tight low-speed turns. If you're drag racing then a locking diff. is better, but for use on the road I definitely prefer the Quaife, which is also less prone to causing snap oversteer when you're - ahem - driving enthusiastically.More likely it hasn't got one. You don't need one as the TC does its job well but you'll get more thrust off the line and out of slow corners because the TC will be cutting in less.
When I ran my current E63 on an open diff I didn’t see much of the TC warning lamp either, but swapping to a Quaife diff the improved thrust when I floored the throttle showed me quite how much low-level “silent” intervention it had been making.My CLS63 very rarely comes on
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