These tires came with my 2015 Audi A4 S line. I have the 19" wheels. Let's start with the good, they have excellent grip in wet and dry weather. However they have ruined the overall driving experience of an otherwise great car with their excessive droning. Your car turns in to a drum of unrelenting humming, that only gets worse the longer you drive. If you're thinking of getting these tires, I strongly suggest looking into a competitors as these are by far the loudest tires ever made.

Bought these thinking that they would be as good as Michi's or Pirelli's, how wrong I was supplier fitted and nominated the pressures. Great handling both wet and dry but you could almost see them wearing out. Put car in for a regular service and was amazed to read that rear tyres illegal and needed replacing at 18,000 KLM!!!!!!!!!!!!!!! Never again, back to reliable dependable options from anyone but Conti.

I too have been driving an MB C350 CDI with Conti 225/40 ZR18 fronts and 255/35 ZR18 backs. I now am up for 4 new at 55K mostly urban driving which I reckon is good going give the prodigious torque of the V6 Turbo diesel.
Have had to buy 2 X new replacements on the way due to sidewall. Both my fault. Drove a few k's on a flat to a servo coz I was too lazy to change it. Shredded sidewall!!. drove over a car park steel pole lock that was supposed to be countersunk, but was not and nicked the side wall. Dead tyre again. Other than self inflicted injuries, these tyres have been outstanding and I will buy again. If anyone can tell me how much I should pay and from whom?

Had these tyres as new on my new Peugeot 308 and they only last for 25000 Klms. I don't think they are suited for the rougher Australian roads and definitely not on the Peugeot and it's direct steering. Both tyres wore out on the outside rims and tyres were always kept at recommended pressure.

To soft and design is to flat on the side walls for car and road.

These tyre came as standard issue on my Kia Rio. They had great grip but when the side wall blew out on one for no reason I decided to research them. Looks like they have a reputation for this type of failure. This type of tyre failure for no reason is inexcusable. It is obviously a design fault and one which could put lives at risk and I would do anything to tell people not to consider buying these tyres.
Good grip
Life threatening design fragility.

I have been driving 234/45/17 on my Commodore for the past year and have found them to have exceptional grip on dry and wet roads. No noise and good braking. The tread pattern looks great too with their deep prominent channels.
My only issue (apart from the cost) would have to be the side walls seem to be too soft or thin, if that makes any sense. I inflate them to 47psi (limit is 52 I think) and as I drive it still feels like I am driving on deflated tyres.
Although I love the grip these tyres have, I wouldn't recommend them to anyone.
Treadwear, wet and dry grip
Price, side wall integrity

Bought a set of these tyres based on recommendations from jax tyres in Preston. One week later the sidewall got a hole and I was told I had to buy a new one. Wish I had read the reviews earlier as it looks like they have sidewall problems which I never had with my previous tyres.

No warranty service

Continental, Conti Sport Contact 3, 225/45 R 17 94W were fitted on my car when I bought it, so I replaced them when they required replacing after approximately 25,000Km. Again they only lasted a little over 25,000km. I'm not sure if it's the tyres or the setup of the car, but they handle really well and stick to the road. I feel extremely confident when driving in both wet and dry conditions. Unfortunately, because of the price and the low mileage of these tyres, I won't be purchasing these again now that I'm due for new tyres.
Excellent grip
Expensive, Low Mileage and Noisy

New June 2012 Mercedes C250 CDI comes with 225-40-ZR18 Front and 255-35-ZR18 Rear. Less than 1200km normal mix of city/hway driving and both left side tyres (front and rear) side walls have failed (bulge) on outside wall only, no rim damage adjacent to tyre wall failure. Tyres were inflated to the correct pressure by the Dealer. Never mounted gutters or hit any objects on the road. In 40+ years of driving I have never had a tyre wall failure.
The Mercedes is a magic machine, not so sure about the durability of the low profile tyres
Exorbitant price (around $1300) to replace two tyres

Comes with the factory default (VW Passat 2010). The tyres (235/45/17) have excellent grip in both wet and dry and very quite. Wear off after 40K used but was told it was normal in Passat. Been shop around to find a good deal. I am considering Yokohama C Drive due to price ($225 compared with $266/tyre for CSC3).
Excellent grip. Love them
Expensive

Ran the CSC3's on a HSV Avalanche (2 tonne all wheel drive). Tyres (245/45/18) gripped excellent in both wet and dry and were very quiet. At $350 a pop they were a little pricey but I could not forgive the wear rate of these tyres, 13000km's, And this is my wifes oversized shopping trolley!!! Would hate to see how long they would last if I were driving. Definately not suited to a heavy car.
All round grip.
Treadwear rate. 13000km's on wifes car

would not buy again simply due to phenomenal wear rate and exorbitant pricing. a bit cheaper now but in late 2009 paid $695 to replace ONE flat
great all round
price and wear - down to webbing at 20000 kms

Great tyres and will use again. Not much shop carry them and hard to see them on special. Better tyres than its old brother CSC2 for sure.
Good wet and dry, great stop power. MO wheels on Mercedes W221 and W204
price