From my own experience........ I have a 250 SEL with 18" wheels (the staggered set up).
I had Bridgestones (Turanza or Potenza can't remember which) on the car when I got it. I found them to be pretty awful....noisy, particularly on the rear wheels and tramlining was a bit grim.
I replaced them with
Front: Goodyear Efficientgrip Performance 225/40/18
Rear: Goodyears Eagle F1 Assymetric 2's 255/40/18 they didn't, (and still don't as far as I know) make the Efficientgrip Performance in this size.
Very pleased with them. Much much quieter and no tramlining. Get full geometry done after fitting all four wheels/tyres .... it's worth it!
Here's a post that may help.
Out of interest.... my wife has Bridgestone Turanzas on her MX5 and they are not too bad. I do find them noisy on the back, but it is a PRHT version so there is effectively a large sound box behind the seats where the roof folds into!! They are all going shortly when worn sufficiently. May try Kumho's next time as quite a few MX5 drivers recommend them.