SL/R231: New Bridgestone Potenza S001 tires for the 875 mile SL
The SL received 4 early Christmas presents.
Had to replace the original factory Bridgestone run flat tires due to age.
Was advised by the Mercedes Benz service department to replace the 8 year old tires even though the car only has 875 (now 900) miles.
Costco had them in stock and approximately 1 hour later I was on my way back home.
They wouldn’t sell me anything but run flat tires, no spare tire etc., and this is the only run flat tire that they offer in 19 inch tire size.
Hope this helps anyone else who needs to buy new tires for their SL.
Happy Holidays,
Mike




The SL received 4 early Christmas presents.
Had to replace the original factory Bridgestone run flat tires due to age.
Was advised by the Mercedes Benz service department to replace the 8 year old tires even though the car only has 875 (now 900) miles.
Costco had them in stock and approximately 1 hour later I was on my way back home.
They wouldn’t sell me anything but run flat tires, no spare tire etc., and this is the only run flat tire that they offer in 19 inch tire size.
Hope this helps anyone else who needs to buy new tires for their SL.
Happy Holidays,
Mike
BTW, why so few miles on your SL?
The original owner lived in Boston in the warm months and flew south for the winter to Naples Florida.
He kept this car at his Naples Florida house along with his impressive car collection. Said He purchased it as a weekend cruiser.
They decided to sell everything and live abroad in Spain.




You got a great deal on great tires. I had those on my BMW 7 series sport. Very nice tires.
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I have 275 35 20 sized tires rear & 255 35 20 in front. Wondering if anyone knows if mix match is ok.
I have 275 35 20 sized tires rear & 255 35 20 in front. Wondering if anyone knows if mix match is ok.
I would strongly advise against mixing run-flat and non-run-flat tires on your car.
As you know, run-flats have a much stiffer sidewall. That stiffness gives them a nice, crisp "turn in" response. Non-run-flats have a significantly more flexible sidewall (thus their more comfortable ride), but their response to cornering force is slightly slower as a result. With non-run-flats in front and run-flats in the rear, that will spell understeer. This factor, by itself, probably isn't terminal. But you would almost certainly notice an unsettling, "squirmy" feeling in normal driving, as the front end doesn't react as quickly as the back end. I don't think your change in tire pressures would be enough to balance out the response.
FWIW, having run-flats in front and non-run-flats at the rear would strongly magnify this odd feeling, probably to the point that the car would feel like it had a flat or low tire in the rear.
Rick



