what is your tire pressure?
do you follow the specs on the manual?
i have always use 32psi all around. i wonder if i am missing something |
The door tag says to runn the fronts 6lbs less than the rears, IIRC, atleast on the 123s. So I keep mine up toward the max psi stated on the tires, but keep the fronts a little lower than the rear.
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In about 800,000 miles of 123 cars and about half that in other 124's and 210's I found 32 front and 35 rear to work very well. The extra few pounds in the rear prevented uneven and acclerated tire wear, especially the right rear.
Hope this helps. |
The guy who does my alignment recommends pressures between 32 and 35 psi. He says the Mecedes-recommended pressures down around 28 psi make a softer ride for the old farts (like me!) who buy Mercedes but it's not good for the tires.
Jeremy |
Yes, if you run 28PSI you will be looking at frequent tire replacement.
Get Buster to help you with those tire replacements.:D He looks like an ambitious sort.:D |
You guys are gonna laugh, but I have too many cars to remember what goes in what (7) So I put 35psi in everything I own.
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... if 40 looks bad, I let a little out...
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33/34psi all around on 300D w123 and 190E
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35 front, 40 rear. More if I have a heavy load, they're rated to 51psi.
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It would be fair to say that 95% of the cars over here run 32psi. |
Tire pressure requirement is set both by tire construction and driving style. Setting it per the tag inside the door is OK for starters but here is how I "fine tune" (learned this from my earlier SCCA days). Once set to tag recommendation, take a piece of chalk and put a line perpindicular across tread and down about an inch on the sidewall. Go out and drive in your normal manner. When you return, check the chalk line and see how much is scrubbed off. The ideal pattern should show chalk gone from tread area and just onto the area the tread begins to wrap down to the sidewall. If you are down on the sidewall, add air; if you only scrubbed from the flat zone of the tread, let out some air.
Why would a tire require more or less air than the manufacturer's recommendation? Tire sidewall stiffness is a key factor and is set by tire construction. |
Benzman53, thanks! Your SCCA method sounds logical, and I will try it soon.
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