C
circleall
Guest
The sticker on the driver's side door frame says 25psi front/30psi back. The after market tires say 44psi max. Which pressure is correct?
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M
magiccharm
Guest
Use the pressure on the door panel, the factory engineers spent weeks testing different pressures to find the right combination for your car. The pressure listed on the tire is the maximum safe pressure for the tire.
J
jim
Guest
Use the after market reccommended pressure. The pressure listed on the door panel is for the stock tires.
T
Texas
Guest
Interesting, I would actually say it is a matter of taste and preference.
The car will "feel softer" (and more sluggish/unresponsive) if you run pressures on the low side. A pregnant woman or person with back problems will feel best about the stock setting 25 psi front/30psi rear. But that is lower than I would recommend for most folks.
The car will "feel tighter" (i.e. more responsive handling, also better fuel economy, also better load capacity) with tire pressure on the high side. But at the same time, the higher pressure makes the tires stiffer and may just send jolts up your spine.
So the practical answer is, put in 44 psi all 4 wheels, drive the car for a while and see if you can tolerate it, and if it is "too stiff" then drop about 4-5 psi and try again driving it for a while.
And I should also say... where the manufacturer seems to recommend different pressure front and rear, I would generally ignore this and put in equal pressure all around, but this may change handling characteristics. Running lower pressure 25psi on those front steering tires will help make your steering less responsive. If you like less responsive steering, you should take the advice to run lower pressure in front. This makes your lightweight responsive japanese car behave more like a heavy american car, so for marketing to this country they recommend low pressure so it handles like a Buick.
While I'm on topic, the Ford Explorer / Bridgestone Tire rollover controversy was all about a mismatch between what was on the driver door sticker (over 30psi) vs what the dealers set (25 psi) to make the SUV ride softer to better appeal to soccer-mom buyers, and then if you put the pressure too low the tires are more likely to fail under load, so if you care about load capacity DO NOT run low tire pressures.
The car will "feel softer" (and more sluggish/unresponsive) if you run pressures on the low side. A pregnant woman or person with back problems will feel best about the stock setting 25 psi front/30psi rear. But that is lower than I would recommend for most folks.
The car will "feel tighter" (i.e. more responsive handling, also better fuel economy, also better load capacity) with tire pressure on the high side. But at the same time, the higher pressure makes the tires stiffer and may just send jolts up your spine.
So the practical answer is, put in 44 psi all 4 wheels, drive the car for a while and see if you can tolerate it, and if it is "too stiff" then drop about 4-5 psi and try again driving it for a while.
And I should also say... where the manufacturer seems to recommend different pressure front and rear, I would generally ignore this and put in equal pressure all around, but this may change handling characteristics. Running lower pressure 25psi on those front steering tires will help make your steering less responsive. If you like less responsive steering, you should take the advice to run lower pressure in front. This makes your lightweight responsive japanese car behave more like a heavy american car, so for marketing to this country they recommend low pressure so it handles like a Buick.
While I'm on topic, the Ford Explorer / Bridgestone Tire rollover controversy was all about a mismatch between what was on the driver door sticker (over 30psi) vs what the dealers set (25 psi) to make the SUV ride softer to better appeal to soccer-mom buyers, and then if you put the pressure too low the tires are more likely to fail under load, so if you care about load capacity DO NOT run low tire pressures.
T
Texas
Guest
Interesting, I would actually say it is a matter of taste and preference.
The car will "feel softer" (and more sluggish/unresponsive) if you run pressures on the low side. A pregnant woman or person with back problems will feel best about the stock setting 25 psi front/30psi rear. But that is lower than I would recommend for most folks.
The car will "feel tighter" (i.e. more responsive handling, also better fuel economy, also better load capacity) with tire pressure on the high side. But at the same time, the higher pressure makes the tires stiffer and may just send jolts up your spine.
So the practical answer is, put in 44 psi all 4 wheels, drive the car for a while and see if you can tolerate it, and if it is "too stiff" then drop about 4-5 psi and try again driving it for a while.
And I should also say... where the manufacturer seems to recommend different pressure front and rear, I would generally ignore this and put in equal pressure all around, but this may change handling characteristics. Running lower pressure 25psi on those front steering tires will help make your steering less responsive. If you like less responsive steering, you should take the advice to run lower pressure in front. This makes your lightweight responsive japanese car behave more like a heavy american car, so for marketing to this country they recommend low pressure so it handles like a Buick.
While I'm on topic, the Ford Explorer / Bridgestone Tire rollover controversy was all about a mismatch between what was on the driver door sticker (over 30psi) vs what the dealers set (25 psi) to make the SUV ride softer to better appeal to soccer-mom buyers, and then if you put the pressure too low the tires are more likely to fail under load, so if you care about load capacity DO NOT run low tire pressures.
The car will "feel softer" (and more sluggish/unresponsive) if you run pressures on the low side. A pregnant woman or person with back problems will feel best about the stock setting 25 psi front/30psi rear. But that is lower than I would recommend for most folks.
The car will "feel tighter" (i.e. more responsive handling, also better fuel economy, also better load capacity) with tire pressure on the high side. But at the same time, the higher pressure makes the tires stiffer and may just send jolts up your spine.
So the practical answer is, put in 44 psi all 4 wheels, drive the car for a while and see if you can tolerate it, and if it is "too stiff" then drop about 4-5 psi and try again driving it for a while.
And I should also say... where the manufacturer seems to recommend different pressure front and rear, I would generally ignore this and put in equal pressure all around, but this may change handling characteristics. Running lower pressure 25psi on those front steering tires will help make your steering less responsive. If you like less responsive steering, you should take the advice to run lower pressure in front. This makes your lightweight responsive japanese car behave more like a heavy american car, so for marketing to this country they recommend low pressure so it handles like a Buick.
While I'm on topic, the Ford Explorer / Bridgestone Tire rollover controversy was all about a mismatch between what was on the driver door sticker (over 30psi) vs what the dealers set (25 psi) to make the SUV ride softer to better appeal to soccer-mom buyers, and then if you put the pressure too low the tires are more likely to fail under load, so if you care about load capacity DO NOT run low tire pressures.