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#1
12-21-2002, 04:26 AM
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Do you over-inflate your tires?
1. How many here over-inflate their tires just a little and don’t go by what’s recommended on their gas cap?
2. If Yes how much? Thai GI sends…
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GI but not GI Joe They call me "The Thai GI" Thai in the US Arsenal 
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#2
12-21-2002, 05:45 AM
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I have went with Larry Bible sugggested in other posts and do 32 in front and 35 in rear on Continental CH's on my 95 E420. Gas cap info calls for 29 and 30, but as Larry says these are minimum
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95 E420 ( 76K) SOLD 85 380SE(125k) 95 SL500(72k)
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#3
12-21-2002, 06:25 AM
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I used to inflate to the max listed on the tires, but on someone's suggestion (may have been an auto shop teacher; I don't remember), I started keeping the tires right at where the rating plate (or in the Benz's case, the fuel door) says they should be. So, in the 300D, I keep the rear tires at 32 and the fronts at 28, and on the truck, I keep the front tires at 50 and the rears at 80. Gotta love load-range E tires, eh?
 Now if I could find a 12v air compressor that could get tires to that kinda pressure...
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2001 VW Jetta TDI, 5 speed, daily driver 1991 Ford F-350, work in progress 1984 Ford F-250 4x4, 6.9l turbo diesel, 5 speed manual Previous oilburners: 1980 IH Scout, 1984 E-350, 1985 M-B 300D, 1979 M-B 300SD, 1983 M-B 300D Spark-free since 1999
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#4
12-21-2002, 10:16 AM
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I think it depends on the load. For most passenger cars anything between 28 and 34 seems fine. The most noticeable difference being in the ride. If you're setting up your racecar it's a different story!
Kuan
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#5
12-21-2002, 11:15 AM
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Over-inflating is going over the maximum pressure set by the manufacturer of the tire which is listed on the sidewall. Everything else is tuning!
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#6
12-21-2002, 02:14 PM
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The tire pressure stamped on the sidewall of a tire only tells you what the maximum amount of pressure that tire will hold. It tells you absolutely nothing about what tire pressure is recommended for your car.
I clipped an article from an automotive trade magazine that discussed this issue. It speaks to the confusion regarding what is the proper tire pressure - what is stamped on the tires, or what the decal inside of the door or on the 'B' pillar says. Following is an excerpt: The Rubber Manufacturers Association told federal regulators that those pressures stamped on the sidewalls of tires should be eliminated. They are, simply, the maximum inflation pressure for the tire but are a "source of misinformation and confusion" for consumers, the group said. Donald Shea, RMA president, went on to explain that "the current listing (on the sidewall) of the maximum pressure on tires is not the recommended normal inflation pressure." Rather, you should use the tire pressure recommendations found on your vehicle's decal - also in the owner's manual for your vehicle- to properly inflate your tires. These figures are determined specifically for your vehicle and take into account your vehicle's weight, handling characteristics, etc.
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Paul S. 2001 E430, Bourdeaux Red, Oyster interior. 79,200 miles. 1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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#8
12-21-2002, 04:17 PM
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Oh yeah, I use exactly what is recommended for my car:
29 psi in the front and 32 psi in the rear.
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Paul S. 2001 E430, Bourdeaux Red, Oyster interior. 79,200 miles. 1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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#9
12-21-2002, 07:36 PM
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Quote:
My '71 Power Wagon has 8R19.5's, 12 ply 'F' rated M/S tires that recommend 110 PSI! If I ran at that pressure, it would beat me to death  So I run at about 60.I run my Benz 32 PSI front and rear. Seems if I run any lower the outside tread wears faster than the rest. At 32 I get even wear and a comfortable ride.
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past MB rides: '68 220D '68 220D(another one) '67 230 '84 SD Current rides: '06 Lexus RX330 '93 Ford F-250 '96 Corvette '99 Polaris 700 RMK sled 2011 Polaris Assault '86 Yamaha TT350(good 'ol thumper)
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#10
12-22-2002, 01:41 AM
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Re: Do you over-inflate your tires?
Quote:
On my bike I run the tires at 75 psi which is 5 psi over the max. The higher the pressure the less rolling resistance. So running them a little over max means I don’t have to work quite so hard. On my cars I run the tires closer to the minimum recommended because I enjoy a softer ride and am not looking to eek a little better gas mileage (though I suppose I should). On the other hand, I’ve heard some folks say to dial the pressure on car tires up to 70 psi so that it will “corner like a Lotus”
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...Tracy '00 ML320 "Casper" '92 400E "Stella"
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#11
12-22-2002, 08:52 AM
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Re: 34 psi
Quote:
My stomach is at 45 psi right now thanks to grandma
__________________
Brandon 2008 S550 1957 Dodge D100 1967 VW Microbus 21 Window 2001 Suburban 2004 Beach cruiser bicycle -----------------GO DUKE!----------------- "It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. For that reason alone, people of other faiths have been afforded freedom of worship here." Patrick Henry 1776
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