I was out in the C63 a couple of days ago.
Wet road, some mud, but dead straight.

I accelerated, a bit harder than normal and the back end stepped out towards the near side, very suddenly pointing me at incoming traffic.
The LSD and multitude of stability and safety software features kicked in and I counter steered, so no harm done.
Almost an "adrenalin is brown" moment.

It is a RWD car with Max power 476bhp @ 5500-6250rpm and Max torque 479lb ft @ 1750-4500rpm.
It is that Max Torque at 1750 rpm that bites.

The rear tyres are Goodyear Eagle F1 Supersport, about 1/3 worn whilst the Fronts are Michelin Pilot Sport 4S with only 1200 miles run.
:Both are highly regarded tyres, but I am not that happy that on a car like this the previous owner had changed the MO rears to non MO Eagles.
Could this tyre difference have helped unbalance the car?
Rears only last about 5000 miles, so they will need changing next year. I'll certainly put Michelin Pilot Sport 4S on the back.....

Thoughts and comments appreciated!

A final thought: without all the electronic stuff it would have been a lot more interesting, and expensive.....

Eek!

- 'pleased you are OK Peter and no real harm done.

I would always try to replace tyres with matching ,front and back.

I am usually able to replace all 4 so not really a problem, but given the wear rate on the Merc. I can see how this may have happened.

I think you are wise to go with the Michelins - but I would be doing it sooner rather then later ,given your experiences.....

Merry Christmas to you and yours

James

Sorry to hear about your moment of excitement. Winter roads were always fun in my E63s (S212 2WD) in the same manner so it does sound like "normal for type" I am afraid. If it is any support I then went for an RS6 and the grips levels went up in spades. Sadly the feedback and enjoy went down at a greater ratio. Rejected. I would prefer to drive slower in the wet and enjoy little slips rather than attain warp speed and then have a massive wipe out. Those AMG V8 engines do demand respect.

I have yet to be convinced that having M0 on the end of the rubber makes it any safer or different to the bland version of the same rubber lump? I had a salesman in a tyre company trying to pitch me the exact Yokohamas for my Skyline many years back. I paid up and had them fitted at £120 a corner more than the tyres I wanted. The car was like a truffle hound, camber hunting, sliding. I replaced them with some Continentals and it was way better.

I would love to know if they do actually make them differently for the M0/A0/N0 versions of any given size/tyre if we have a tyre industry insider within the forum?

user error 😁

plus maybe a slippery muddy patch

But definitely best to have the same tyres all round

Definitely have the same tyres all round Peter.

Absolutely user error, mea culpa!
As Alistair has said, the AMG 63 motor really does demand respect, much more than the BMW 4.8 motor in the Morgan, which is a bit more forgiving as it doesn't have the same rush of torque.
The AMG 43 with AWD is of course totally forgiving.....especially with Michelin Alpine winter tryes.

Have had similar with the Mog , plenty of right foot on straight overtaking lane , albeit dryish conditions and the Mog did a nice back end side step and then corrected herself nicely ! So very much happier about the safety of the Mog in power on situations but not doing this on rounderbouts !

Slides no. Slips - little - and often

I do remember one wet winter day in a bit of a rush.

The E63 even with traction control had a bit of a sideways moment with the back overtaking the front slowly.
I was coming off a roundabout and the back came around gently allowing me to add opposite lock and keep it smooth.
I caught it and corrected so that we just continued along the road.
More luck than judgement!

At that point I realised an E63 estate was a very long car and I was broadside across two lanes, filling both.

Apparently I managed to retain my cool as the passenger (from work) just said "stop mucking about or we will be late" not realising I was a fraction higher in the seat than I had been a moment before.

In the 1990's I had a company Vauxhall Omega 2.5 TD. It was quite a good car - especially as it was selected from a choice of one. Its best feature was the requirement for an oil change every 4500 miles. This meant that I never washed it myself.

Company policy was that, if no pool cars were free, managers had to make their cars available to people who needed to make local journeys. One day, one of the apprentices appeared in my office to borrow my car. It was a wet day. 45 minutes later, he is back looking a bit sheepish. He had floored it on a roundabout and lost the tail. The car then reversed at speed and was stopped suddenly by a Volvo. Fortunately nobody was hurt. He learned a valuable lesson about power, traction and momentum. I learnt to find a reason never to let him use my car again.

The hire car they let me have while mine was being repaired was a new Rover 620. It was dire. The Omega had a 100k on the clock by then - I couldn't wait to get it back.

"The car then reversed at speed and was stopped suddenly by a Volvo"

That made me laugh.