S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

rear tire pressure - too high?

Old 12-04-2009, 09:30 AM
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07 E63 06 CLK55 Cab 03 P-car C4S
rear tire pressure - too high?

hi all,
for those of you with 18" AMG wheels, can you share what you're using for rear tire pressure? the factory spec is 32 lbs, but my most recent set has worn pre-maturely in the center while the sides are still very nice. i'm usually the only person in the car so perhaps it's lighter, but i didn't think the passenger weight would be that much of a factor.
i'm about to install a set of rear tires, so your input would be helpful.
thank you.
Patrick
Old 12-04-2009, 10:44 AM
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Originally Posted by bzliteyear
hi all,
for those of you with 18" AMG wheels, can you share what you're using for rear tire pressure? the factory spec is 32 lbs, but my most recent set has worn pre-maturely in the center while the sides are still very nice. i'm usually the only person in the car so perhaps it's lighter, but i didn't think the passenger weight would be that much of a factor.
i'm about to install a set of rear tires, so your input would be helpful.
thank you.
Patrick
Doesnt it say 32 COLD +4 PSI warm so =36 PSI?

I got 40 on my 19's.
Old 12-04-2009, 11:17 AM
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I always like to fill mine to 35, but dont keep it constantly topped off at that level... I will only check it 2-3x per year and can lose 5-7 lbs between checking....this way tire is always in a safe range and never too low.

Wear seems to be even using that method, because some of the driving is at the full pressure and some is at the lower pressure.
Old 12-04-2009, 01:28 PM
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2004 S55 ///AMG, 2007 E350
If center is worn but sides are normal it means too high. Your tire pressure gauge might be inaccurate. I know the cheap ones are off +/- 5 PSI.

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