Air Pressure???? 
Air Pressure????
TECH Fanatic
Joined: Sep 2003
Posts: 1,265
Likes: 4
From: St. Clair Shores Mi.
40-50 psi will make the car ride like crap and the Max pressure listed on the tires is only for bead seating.
Look inside the drivers door for the proper tire inflation pressure.
My `98 Formula with 245/50/16 GSC's reccomended 30 psi
I currently run 30-32 in my 18's aswell.
Thread Starter
On The Tree
Joined: Feb 2009
Posts: 134
Likes: 1
From: P Park, FL
OMG were they wrong.
40-50 psi will make the car ride like crap and the Max pressure listed on the tires is only for bead seating.
Look inside the drivers door for the proper tire inflation pressure.
My `98 Formula with 245/50/16 GSC's reccomended 30 psi
I currently run 30-32 in my 18's aswell.
40-50 psi will make the car ride like crap and the Max pressure listed on the tires is only for bead seating.
Look inside the drivers door for the proper tire inflation pressure.
My `98 Formula with 245/50/16 GSC's reccomended 30 psi
I currently run 30-32 in my 18's aswell.
I don't know why some people want to tell everyone to run ridiculous pressures in "performance" tires. There must be some sort of origin for this. At any rate, you can tune the tires with a few extra or less psi but essentially if you are in the ballpark of stock weight then the recommended tire pressure on the door should be followed for pretty much any street tire you throw at it like LS1W66 said.
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TECH Junkie
Joined: Aug 2006
Posts: 3,915
Likes: 676
From: Western North Carolina
If you run 40 psi + you will wear away the middle of the tread prematurely, needing to replace your tires way sooner than normal pressures in the low 30's. I get perfect wear at 30-31 psi just like the door panel sticker states. The exception to this is adding a few pounds for extensive high speed driving, but even then only 35 psi or so. It holds true for almost all cars. The max psi on the side of the tires can be confusing with many stating 50+ psi. That is what the tire can bear at max loads, not recommended. I've talked to Goodyear reps at their HQ in Ohio on several occasions after getting 'strange' advice (like you did) from tire stores and dealers. Too many myths and not enough accuracy. I can see an unscrupulous tire dealer recommending 40+ psi to get you to buy another set of tires quicker.
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Either the dealership was looking at max psi or they don't know what they're talking about. On a street tire anywhere between 26 and 36 works for me, just play around with it until it feels right for you. For instance going with too much pressure will make the car bounce around especially at high speeds, but don't forget your pressure will change as your tires heat up. Try getting a pressure reading when the tires are cold and then again when they heat up, and figure out a combo the works for you.
My tire are running great at 32 right now, but I will play with them a little bit and see what rides better 
TECH Junkie
Joined: Aug 2006
Posts: 3,915
Likes: 676
From: Western North Carolina
Since you live in FL (home of summer monsoons) you should probably stay closer to 30 psi during the rainy season anyway. You keep high psi in your tires on those oil slick roads when it is raining and you will be sliding all over the place.
