trsos

Just bought a set of 215/50ZR-17 Bridgestone Potenza RE960AS Pole Position XL (max pressure 50 PSI).

W/ the XL (heavy load) 95W rating, and stiff sidewalls, the installer recommends pushing the pressure up to 90% of maximum (i.e. 45 psi).

Any thoughts on this % for such a high performance tire - what would you recommend and on what information?

Stock04

You should put whatever tire pressure the car recommends. i believe its 32f and 30r but its on the inside of the drivers side door. where did you get the tires installed? i never heard that before. its not going to be a nice ride either with 45psi

http://www.tirerack.com/tires/tirete...&currentpage=2

"Check and Adjust First Thing In The Morning. Set according to the vehicle manufacturer's cold tire pressure(s) recommended on the vehicle's tire placard or in its owner's manual. This must be done before rising ambient temperatures, the sun's radiant heat or even driving short distances temporarily warms the tires."




http://www.tirerack.com/tires/tirete...&currentpage=2

LuvMyTSX

FWIW, I have those same tires and I keep mine at what it says on the door sticker. 45?! WTF! Lol....

CJ Majesty

I got these tires back in the winter I run mine at 32 in the front & 30 in the rear.

vidgamer

Yeah, at 45, when the tires heat up, you don't have a lot of room before you hit max! I usually put just over what is on the door.

Wisc Badger

I rock 35 all around Nitrogen filled on my Proxes 4's.

hunterk1

Sorry to be OT, but what advantages exist to running Nitrogen? Volume for volume it is 97% of the mass of air - so there's no advantage there...

Wisc Badger

The tire guys told me that nitrogens molocules are larger in mass and reduce the fluxuation in PSI between having cold tires and warm tires to nearly nothing. My tires are like 34 cold and 35 warm instead of a jump like 32 cold 36 warm. Plus they don't leak overtime as much as regular air does.

danotto

I have those same Pole Positions and I run what the sticker inside the door says. 32 front, 30 rear.

jlukja

This is your tires ----->



This is your tires at 45 psi ---->

LuvMyTSX

^^

aaronng

I'd go 33-35psi. 45 is not only too high, you'll have a VERY bumpy and uncomfortable ride.

rb1

Tire pressure is a compromise between longer tire life and ride quality.

Higher pressure (within limits) = less wear, harsher ride, more precise handling.

Lower pressure = more wear, softer ride, less precise handling.

Lower aspect ratio tires might require slightly higher tire pressure, but I can't imagine routinely running more than 35 psi in a street tire.

Wisc Badger

the only drawback with nitro is you cant just go to the gas station to top it off when you need to... and i got my tires in chicago... kinda a long haul just to fill um up.

jester2

Got the same tires. Discount Tire set had them initially inflated them to 36 all around (they thought it was a TL) But I have them set to 32 front 30 rear.