What tire pressure do you run at? I currently have on the front Ultrac - SESSANTA VREDESTEIN GIUGIARO 245/30 ZR 20, the back are Pirreli PZERO NERO 295/25 ZR 20. Both are 50lb max and I run them at 48lbs of air pressure.

I am curious, I have never read or done any research in to what you should or shouldn't have in regards to tire pressure. Do you run more or less depending on the type of driving or weather conditions? Opinions welcome, factual experience preferred.

So what kind of tires do you have?
What air pressure do you use?
Why?

 

That sounds WAAAAAAY high, especially if those are COLD pressures!!! I suspect you should be running them at 34 - 36 psi COLD (that is stone cold before you drive on them)....

I run 27 psi cold for my Hoosier R6's at the track and they get up to 36 psi when HOT. I run 34 psi COLD Front and 36 PSI cold Rear on my GT2 running Michelin PS2's Those are the pressures recommended by Michelin for this car.

 

FWIW:
I run 36front 44rear on the street and drop them by 8+ pounds each on the track 28front 36 rear. (stock tire size)

 

same here

 

36 and 44 are what the owner's manual specify. The manual also warns against not using the same tires at all 4 corners. Differing slip angles can cause uneven traction problems.

Do your tires show more wear in the center? Because your tires are over inflated.

 

You need to read your manual. 36f and 44r are standard with personal minor variance based on driving conditions (track, street etc). I run a few psi lighter than spec. You are way over inflated is my guess.

 

When I got the car in Oct the tires had 20 to 24lbs depending on what tire you checked. I have always ran tires near max but I have never had tires like these before. So I was curious to what people who have had these cars/tires do.

I am not afraid if admitting I don't know something or asking to find out. I'll re adjust what they are now before I leave out tomorrow. No, after close to 4,000 miles this tires are still looking like they are running even. I check them and the lug bolts 1nc a week. Thanks for the info, I'll do the 36 front and the 44 rear and see how it feels.

 

Yep, if you open up the gas lid, the pressures are listed in there in case you need a reminder later. I have to refer to it every once in a while cause all my vehicles use different pressures...

 

Same--it's what the sticker inside the gas filler door specifies

 

I have posted this before....sumi's+high heat = PSI over 50 = trashed tires...these had a few thousand miles on them - and 3 brutal track days



The TPMS reminds constantly about my presure.

 

Classic over inflation symptoms.

 

That was after I let 8 lbs out and then drove like runaway bank robber...The Sumi's just can't deal with heat so the presure goes up and up and up....lol

PS going back to Yoko's this spring. Much better dual purpose tire.

 

I run 36front 44rear on the street as well

 

Before you buy, look into the Bridgestone RE-11's. Supposed to have great grip, good in the wet, have durability, and a good dual purpose tire.

 

I have read the manual. The point of asking is I'm not using stock wheels or tires. The size and make are in the 1st post. I'll lower the pressure upon the advice here.

fdorn, thanks for the pics and to every 1 else for their input.