Bruce In Philly

Odd.... I just checked my tire pressure and I have had no loss since.. well I don't remember when. I put air in the tires in March when I put them on from winter storage and .... I really don't think I topped them up since and I put on around 10K miles since then. I thought the old rule of thumb was 1 lb loss per month.

No nitrogen, just Philly air.

By the way, I am using a Longacre gauge now..... wow nice. Treat yourself.

Peace
Bruce in Philly

Ten Years

Nice. You can thank BBS (for your wheels) and your tire maker. ;-) Mine are stable as well. Thanks, Otto Fuchs.

user 72902

I get very little air loss over the summer. It seems I need to add every month once it gets cold.

OKB

sometimes just tightening the stem shaft and putting in new valve stems will stop leaks, thats always done when you put on tires.

Petza914

Depending on the ambient temperature of when the pressures were checked will affect the pressure reading. If the car lives outside or in a non climate controlled garage, the pressure reading at the 50 degree March temperature will be different than that of the 70 degree August temperature. I think it's Boyle's Law that relates pressure, temperature, and volume. Since the volume of space inside the tire doesn't change, it's only the pressure and temperature variables that come into play here.

Gonzo911

It's gotta be the Philly air...

Blu311

The way I was taught was 1 lb a month and 1 lb for every 10 degrees it drops outside so you would see very little if any drop from march to august in philly. Obviously not exact science but something I've always kept in mind as a guide.

LexVan

You lost air. But the increase in air temps offset the loss.

Bruce In Philly

Yep, that must be it. Temps were spot on so it threw me.

Just mindless minutia .

Peace,
Brice in Philly

LexVan

You are driving a performance car, that is pretty sensitive to tire pressures. Not to mention the cost of tire replacement. You need to be more diligent with checking your pressures. I can easily detect the difference with 1-2 PSI.

Bruce In Philly

delete

Bruce In Philly

Yep, can't argue with that one.

Peace
Bruce in Philly