There is probably a need for an alignment based on the wear description of the Yokos.
It won't take long for the same thing to happen to the Acceleras.
If the car is out of alignment then the minute the Acceleras are put into the service the
irregular wearing of the tread begins.
Just one thing I noticed, I thought most or all MB W211 17" wheels are supposed to have
245/45/17 not 235/45/17.
Actually, the lion's share of W211's come with 16" wheels. The 17" wheel is an upgrade, for which the tires cost more of course.
With tires, you get what you pay for. Never mind most online reviews, as people who review a tire and haven't driven that tire more than 25,000 miles shouldn't be leaving a review. I drive over 40K miles per year and have been for over 25 years due to my job and go through a lot of tires. When it comes to tires, it's a matter of trade-offs. Performance, touring, 4 season, summer, snow, etc. I obviously drive a good touring tire, due to my driving milage, but they certainly aren't the best for handling, but they are super for ride quality, fuel economy and I can drive them over 100K miles safely. No tire is perfect for every situation. So telling you if a particular tire is any good is a relative thing.
But like I said, you get what you pay for.