Date registered: Mar 2005
Vehicle: '01-E320 & 02-ST2
Location: John 15:18-19
Mentioned: 0 Post(s)
Quoted: 35 Post(s)
Welcome aboard. Please take a moment to click user cp and edit details to add your vehicle and location to your profile, it's often useful information when you're seeking assistance.
There is a tire and wheel tech forum dedicated to the topic, so you're likely to get more meaningful responses if you post there instead of this "generic" category.
That said, I'll offer these thoughts.
You drive a true high-performance, technically advanced luxury sedan. Does your friend? Tires that work on one vehicle may or may not be suitable for another.
Mercedes models down the years have occasionally been fairly picky about tires; sometimes a particular brand works well, sometimes it does not. Sometimes a particular MODEL of tire doesn't work well, even though it's from a brand that otherwise is fine. (IIRC there was, for example, an issue with a particular Pilot Sport (Michelin) on the W210 chassis, it introduced odd handling characteristics.)
Thus, unless you have a problem with the tires that are already on your car, I would suggest that you stick with that brand and model. This is really not a place for guesswork, since you're gambling not only with your money, but also potentially your life.
Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy; its inherent virtue is the equal sharing of misery. (Winston Churchill)