CyCloNe!

ehall

Good info. Thanks! Now I have an idea why Pat runs that.

JustinL

I have the same size tires and I believe the same wheels as you Ehall. I use a pyrometer to get my desired temp spread. 32-34 psi range gave me good values. I had to take air out at the track when the tires warmed up lots. I don't see a problem with using a pyrometer to set them on the street either. Go for a spirited drive, collect temp and pressure data. Adjust as necessary.

ehall

Yep, same wheels. I've painted mine, so I'll throw up some picks when everything is in place. A spirited drive should put about an additional 3psi in the tires. Anyway, I'm starting to get a good starting point.

azbanks

Why does being full of hot air and an Ehall thread always fit together??

Don't shoot the messenger, I'm sure everyone was thinkin' the same thing.



E, I thought you only crossed into dumbass territory when you were on a bender.

ehall

Well, banks, everyone else was discussing the topic, except you so, Pot meet Kettle. Don't shoot the messenger.

mudbuddha

I run 245s/305s on 18s and started with 36 psi all around but find that 41 psi in the rear give me a better feel as well as better wear. Tires wear differently from one maker to another so experiment and see what's best for your use. I'd start with 36 psi and go up/down from there. Most performance tires that I have used or seen, the max recommended pressure printed on the sidewall is usually 44 psi. So for me, once warmed up, the pressure would be around what's recommended for the tire but still under the max value for street driven.

I also experimented with 36/24/36 and found that this combo generally works pretty well under most conditions.

tman

On the street I don't think its that critical, 35 PSI all around should be good.

ehall

Thanks, and yeah, 36/24/36 does seem to be a universally accepted standard. Hell, you can always by a bag for the face!

67King

You should follow the vehicle manufacturer's recommendation. That is what the tire manufacturer's say, but it is also how the suspension was designed. And the contact patch will change SHAPES with a different tire size, but the area will remain the same. And again, that's what the suspension was designed around.

azbanks

Ok so here is my contribution to the topic. Do not let them get low on air. I had my car aligned by Don Jackson Enterprises in Phoenix. A few months later I got this view of my tires.

azbanks

I went back thinking Don's guys had messed up my alignment. I had it aligned when it was hot(summer) and did not check my tire pressure when it cooled off(fall). I drove around about a month and a half in the cooler temps and this is the result. Don says this is actually pretty common.

Keep a close eye on your pressures especially when the temp changes.

mr965

Guys. What offsets are you running for late model 951's. I'm trying to run 255 front and 285 (min) rear also.

ehall

Thanks! Good info!

ehall

I'm running ET52 all around. I think Justin is running 52 fr/58/rear, but double check with him.