GoHardZ28

I am now running a 17x9.5 SS ZR1 rim with a BF Goddrich G-Force KDWS 275/40/ZR17. I was told to run these tires at 40psi. Is this correct???

99Bluz28

iTrader: (35)

I believe 30-33psi is more inline with what you want.

GoHardZ28

Really...I asked the dealership today and they were telling me 50 psi???

LS1W66

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.

GoHardZ28

Thanks for the help. I use to run my 245/50/16's at 30-32 psi but I when I stepped up to the SS wheels I didnt know if they needed more air. I'll try running them at 30-32 like my 16's

HAZ-Matt

iTrader: (8)

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.

ls2 bait

iTrader: (11)

gm recommends 30 psi cold. i run 33 front and 28 rear. gives me the most even wear.

NC01TA

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.

TireSm0ke

iTrader: (1)

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.

Lt14mla

iTrader: (2)

34 in the front. 28-32 in the rear depending on how you drive/race/ etc

GoHardZ28

Thanks to all the ppl that responded. My tire are running great at 32 right now, but I will play with them a little bit and see what rides better

cookba

iTrader: (10)

i ran 275/40/18 KDW tires for 40k miles. I always kept 32-34 in front and 30-32 in the rear.

NC01TA

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.

Saturn5

What's the OEM inflation pressure for a factory WS6 with 275/40-17 tires? Is it the same as the 16" wheels?