View Poll Results: What PSI do you keep your C230 sedtires at relative to the door sill recommendations?
2+ psi under
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0
0%
2 psi under
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2
5.13%
exactly at recommendation
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16
41.03%
2 psi over
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5
12.82%
4 psi over
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13
33.33%
6 psi over
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2
5.13%
6+ psi over
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1
2.56%
Voters: 39. You may not vote on this poll
TIRE PRESSURE thread - All you want to know
#126
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1959 220S / 1979 230 G / 2002 A210 AMG / 2003 C320 SC / 2004.5 C320 SS / 2005 ML350 SE / 2008 smart
I keep my tire psi at about 2-4 above normal. Lot of highway driving.
I have both a C320 COUPE and C320 SportSedan. Definitely a bigger (heavier) engine than a 230K. Amdeutsch, interested about learning more about the weight balance up front, so I might have to adjust psi settings on front tires.
Both my C320's have staggered wheels (17x7.5 front / 17x8.5 rear).
And no, you cannot rotate staggered wheel set-ups.
I have both a C320 COUPE and C320 SportSedan. Definitely a bigger (heavier) engine than a 230K. Amdeutsch, interested about learning more about the weight balance up front, so I might have to adjust psi settings on front tires.
Both my C320's have staggered wheels (17x7.5 front / 17x8.5 rear).
And no, you cannot rotate staggered wheel set-ups.
![drive](https://mbworld.org/forums/images/smilies/driving.gif)
#127
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'05 C230K SS
Originally Posted by Saprissa
Both my C320's have staggered wheels (17x7.5 front / 17x8.5 rear). And no, you cannot rotate staggered wheel set-ups. ![drive](https://mbworld.org/forums/images/smilies/driving.gif)
![drive](https://mbworld.org/forums/images/smilies/driving.gif)
But if you have staggered, wouldn't it make sense, at least from a left-right treadwear balance standpoint, to at least swap your left and right side tires/wheels from time to time? Do anyone do that?
Or is there something I don't understand about tire rotation that makes left-right swapping a stupid idea?
#129
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'05 C230K SS
Originally Posted by CitronC230K_03
most staggard wheels have directional tires, thereofre you can't do a left-right trade.
While we're on the subject, do any of you folks use an electric air pump to inflate your tires at home? Have any recommendations on a good brand or are they all just pretty much the same?
I'd like to do it at home instead of at a gas station because a) i won't procrastinate as much if i can just do it in my garage any time and b) i don't have to worry about cold vs. warm pressure adjustments.
#130
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1959 220S / 1979 230 G / 2002 A210 AMG / 2003 C320 SC / 2004.5 C320 SS / 2005 ML350 SE / 2008 smart
Originally Posted by CitronC230K_03
most staggard wheels have directional tires, thereofre you can't do a left-right trade.
My MICHELIN PS tires, specifically say Direction --->
and the in-board side of the tire, says something like "face other side", I don't remember.
Carlos / Saprissa@aol.com
#132
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1959 220S / 1979 230 G / 2002 A210 AMG / 2003 C320 SC / 2004.5 C320 SS / 2005 ML350 SE / 2008 smart
I haven't needed the use of an electric air pump. I had the tire pressure adjusted to where I wanted it when I had the tires/wheels installed. Since then, I check them every once in a while with an analog dial gauge, and haven't had to adjust. If I did, it probably wouldn't be that much off, since I go over a bit on the PSI. Nothing a quick stop at the air pump during a routine gas fill-up can't do.
Plus, Service A & B intervals check for tire pressure too, and I just make sure to tell 'em just the way I like it. I would think most electric air pumps at reputable auto-shop stores are pretty much the same. I just wouldn't buy one at your local 99cent store.
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#133
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Originally Posted by DiamondNoir2K5
I don't know by what proportion engine weight grows as a factor of liters, valves, supercharge/turbocharge, but I'm assuming from your answer that your engine does weigh considerably more.
Is there a name of this number that describes fore-aft weight distribution? Is this something I can lookup in standard tech specs for a car like on mbusa.com?
Is there a name of this number that describes fore-aft weight distribution? Is this something I can lookup in standard tech specs for a car like on mbusa.com?
Link
#135
Originally Posted by DiamondNoir2K5
amdeutsch,
do you think the weight distribution is different for your 320 vs. my 230 sedan since your engine has more power (and, presumably, weighs more)?
also, does the 320 not have staggered wheels? from what i understand, i cannot rotate my tires since they are staggered (narrower in the front).
do you think the weight distribution is different for your 320 vs. my 230 sedan since your engine has more power (and, presumably, weighs more)?
also, does the 320 not have staggered wheels? from what i understand, i cannot rotate my tires since they are staggered (narrower in the front).
#141
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'09 A4 S Line
Originally Posted by Nickle
OK, checking the back of the gas cap cover . . . hmmm, since my car is an '02, it doesn't have specs for the '05 17 inch wheels my car has.
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#142
No prob! I searched the Tire forum, some seem to recommend using the stock pressures no matter what size wheels and tires are on the car.
That may or may be right, I don't know. But since these are the stock '05 Sport Sedan wheels, I'd like to run them at the pressures recommended by the factory for the '05 Sport Sedan.
Thanks!
That may or may be right, I don't know. But since these are the stock '05 Sport Sedan wheels, I'd like to run them at the pressures recommended by the factory for the '05 Sport Sedan.
Thanks!
#143
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'05 C230K SS
Nickle,
I have seen Luke post several times that you do your pressures more based on the weight and weight distribution of your car chassis rather than the wheels and tires. Therefore you would still go with the pressures printed on your gas flap.
Btw, on an '05 C230 Sedan where those wheels are stock, the pressures are still listed as 28f 32r. I just checked my tires today, I keep them at 32f 36r, which is 4PSI over factory recommendation.
I have seen Luke post several times that you do your pressures more based on the weight and weight distribution of your car chassis rather than the wheels and tires. Therefore you would still go with the pressures printed on your gas flap.
Btw, on an '05 C230 Sedan where those wheels are stock, the pressures are still listed as 28f 32r. I just checked my tires today, I keep them at 32f 36r, which is 4PSI over factory recommendation.
#144
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tire pressure
what pressure do u guys run the stock tire/wheel 17s pressure at. i have a sport model. the gas tank lid says 28 ad 32, isnt that low? i think i have the continental tires on there, with 7000 miles
thanks
thanks
#146
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things with and without wheels
If you want better fuel milage run higher tire pressure like 32 psi
If you want better handling run lower pressure 28 psi.Car manufacturer knows what is best for their vehicle.Keep in mind that when the tire gets hot the tire pressure will increase.
If you want better handling run lower pressure 28 psi.Car manufacturer knows what is best for their vehicle.Keep in mind that when the tire gets hot the tire pressure will increase.
#147
For best gas mileage and longevity of the tire, inflate it to the recommended maximum cold pressure on the tire sidewall, or no more than 5-10% less.
The pressure placard on the pillar gives suggested pressures, and is the same (standard) for all C-Class cars (standard sedans, sport sedans, and AMGs). However, there is a wide range of tires (sizes and aspect ratios) actually supplied with the car you buy. As a result, the TIRE can have vastly different max pressure values than the standard placard. Make sense?
My car came with 51psi Pirellis (16in), and I pretty well shortened their 60,000 mile life while following the placard and inflating only to 32psi. At 20,000 miles the tires were thoroughly worn on the shoulder tread (classic underinflation). I bumped the inflation to 42psi and then got another 8,000 miles of even wear from them. BTW, the ride quality was just as good at the higher pressure as at the lower. The tire maker engineers the tire for ride comfort at the pressure intended for each type of tire.
I seriously doubt the plus size tires (especially the 17in tires on the 230K SS) carry a 32psi rating (think MUCH higher). So, in my case, the "manufacturer knows best" adage is not good advice. My Dunlop SP Sport A2 replacement tires have 12,000 miles on them and they look nearly new. I inflate them to the maximum allowed, 44psi, and there is no uneven wear on the tread at all.
So, the rule of thumb is to be guided by the actual tire pressure value molded on the tire. Give the tire what it wants, not what the car wants. Makes sense, really.
The pressure placard on the pillar gives suggested pressures, and is the same (standard) for all C-Class cars (standard sedans, sport sedans, and AMGs). However, there is a wide range of tires (sizes and aspect ratios) actually supplied with the car you buy. As a result, the TIRE can have vastly different max pressure values than the standard placard. Make sense?
My car came with 51psi Pirellis (16in), and I pretty well shortened their 60,000 mile life while following the placard and inflating only to 32psi. At 20,000 miles the tires were thoroughly worn on the shoulder tread (classic underinflation). I bumped the inflation to 42psi and then got another 8,000 miles of even wear from them. BTW, the ride quality was just as good at the higher pressure as at the lower. The tire maker engineers the tire for ride comfort at the pressure intended for each type of tire.
I seriously doubt the plus size tires (especially the 17in tires on the 230K SS) carry a 32psi rating (think MUCH higher). So, in my case, the "manufacturer knows best" adage is not good advice. My Dunlop SP Sport A2 replacement tires have 12,000 miles on them and they look nearly new. I inflate them to the maximum allowed, 44psi, and there is no uneven wear on the tread at all.
So, the rule of thumb is to be guided by the actual tire pressure value molded on the tire. Give the tire what it wants, not what the car wants. Makes sense, really.
#149
You guys with 230K SS really should read the max tire pressue value on your tires and then re-read my post (#4) above. Fair warning.
What is the Max pressure allowed on the 17s?
What is the Max pressure allowed on the 17s?