As I have elsewhere, I'll add a vote for the Yokohama AVS Db, which I am using on an '88 420SEL (change from Michelin MX4).

I am also using the Toyo Proxes on my daughter's 190E Limited Edition Sportline (new on the car when purchased) -- again very happy, with tremendous grip and handling.

To round it out, I switched from the Michelin Pilot Sports on my C43 AMG to the Sumitomo HTR-ZII -- much better in rain nd better wear tho there may be a bit of loss at the edge of the dry traction performance envelope -- overall, the price/performance ratio more than justifies the switch for my predominately highway driving.

I have nothing against Michelin (we have gotten good service from their LTX SUV tire (two sets) on two QX4s for my wife (on first one, switched from original Bridgestone Duelers -- too trucklike ride), but I don't think Michelin's car tires are price-competitive against the better Japanese tires.

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'98 C43 AMG
'88 420SEL
'93 190E Limited Edition (including factory Sportline package)