F10 Diff Problem

[Marke21287]

Hi Guys,

Over the last few months I have been experiencing issues with the diff on my F10 M5.

On light acceleration going around a traffic circle or corner the car oversteers quite dramatically until the DSC kicks in, cuts engine power and flashes like crazy. Always a right turn.

On hard acceleration in a straight line I get a shuddering from the rear end as though I am driving over rumble strips and occasionally a desire for the car to turn right like there is only traction on the left wheel.

When I turn left and accelerate lightly all is 'normal'.

Had it at BMW and they blame / believe it is my tyres but they are a year old and in equally the same good condition.

My view is that there is only drive on the left rear wheel but I need some help or guidance on how to prove this to BMW or experience on the cause of the problem.

Thanks!!

[KMORGSM5]

i had same shuddering from rear end and BMW replaced rear diff.

What tires do you have and how much tread?

[ur20v]

Swap tyres around? or ask the dealer to put some wheels of a sales car to test- doesn't have to be the same size or ratings, just need to prove this low speed issue.

[TheHouseWon]

Would doing a burn out and analyzing freshly laid rubber help? Maybe its a one-wheel-peel.

[Marke21287]

Originally Posted by TheHouseWon

Would doing a burn out and analyzing freshly laid rubber help? Maybe its a one-wheel-peel.

Hey gents, thanks for the replies.

Tyres are Michelin 20" and more than 50% of tread left.

A burnout sound like a good test... and I can have fun at the same time.....

[Marke21287]

Originally Posted by ur20v

Swap tyres around? or ask the dealer to put some wheels of a sales car to test- doesn't have to be the same size or ratings, just need to prove this low speed issue.

I have an e60 M5 - perhaps i just throw those wheels on and get it around to BMW again.

Kinda like the burnout option too.

[ur20v]

do both... may make the pain of dropping off less due to the adrenalin hit

[bigh47]

What was the issue Marke21287? How did you solve it?