I Like Wide Tires, I Cannot Lie
As folks as saying, wide LOOKS great, but can cause problems with rubbing and hydroplaning. Apparently these W124's have some issues with fitting larger wheels(rims) AND larger tires on these wheels. :crybaby2: SmartGuy, as one member said, there is a lot of info and discussion about this, I've spent hours researching this myself. My bottom line was time and expense. I stayed with the stock wheels(for now), and Michelin MXV4 (H rated?) 195/65/15's. I think the stock wheels are 7 in(V-8) or 6.5 in(6 cyl) wide, not 6 in. You can go with 205/60/15's, I think you said that already. There is also some discussion about changing tires/wheel size affecting your speedometer readings. This is true, however I stayed with STOCK tires and rims, and my speedometer is almost 5 mph over at 70 mph(reads 75!).
The real issue seems to be the OFFSET of the rims, and a member said you have to stay within 37mm-42mm offset, or else you start rubbing inside the front wheel wells on the shocks and fenders in turns. On the rear, the issue is more about the fender lips rubbing the tires, and there are some people who "ROLL" that fender lip with a special tool to keep them from rubbing.
I know you are a "SmartGuy" and you will figure this out. I'm like you, and several others, we like those wide tires because they look meaty and aggressive. These skinny tires are scary small for tossing such heavy, powerful vehicles around nasty, slippery streets.
I often find myself throttling down to avoid wheel spin from a standing start, and since my E320 is a one wheel drive, it's very challenging to maintain traction, wet or dry. For me, I need a limited slip differential and minimum 225/45/17 wheels/tires to satisfy my driving thrills in vehicles like these W124's.
Good luck, I hope you find exactly what you want in your search. :thumbsup:
My tire people told me the Primacy MXV4 was a better tire IN THEIR OPINION, than the newer replacement Premier A/S tire. This may be a similar discussion to "What is the best oil/gas/ATF fluid/brake pad?". I really like the quiet, smooth ride, decent traction, and balance(under 1/2 oz of weight per tire) of these Primacy's. Not a day goes by that I'm not up between 80 and 100 mph. Seriously, nothing passes me if I don't allow them to pass. The side walls are tall, absorb a lot of PA potholes, and stay cleaner than most tires I've used in the past. Year around I run 35 psi in all 4 tires, BTW.