[masraum]

Originally Posted by smadsen

I got a "tire going flat" message in the '15 911 on I-5 @ Camp Pendleton @ 80 mph about two years ago. It was getting dark. Pulled off at the first opportunity to find a RR tire with about 12 psi of air left.

After locating the offending roofing nail, marking the tire. turning the nail to the 6PM position I removed the valve stem insert (with the tool taped to the can of tire soup) and squirted the whole can into the tire. Then I re-inserted the valve stem insert, clipped the tire compressor hose to the valve stem and plugged it into the glove box receptacle. In about 4-5 minutes I had 51 psi.

Instructions say to drive immediately to disperse the tire soup to any other leaks. Drove 120 miles to home with my eye glued to the tire gauge. Still had 51 psi the next morning.

Honest, this procedure was faster, much cleaner, and less dangerous than changing to a spare tire. Sometimes the new ways are better. Unfortunately, the Porsche brand tire soup retails for $120. But the green slime from the local FLAPS sells for $10 and works just as well.

The missing spare tire, wrench & jack take about 50 lbs. out of the car helping meet the ever-tightening Federal CAFE regulations.

Works great if it's a puncture in the tread. If you hit something in the road that pinches your tire sidewall, you're screwed. I've had a lot of punctures over the years from nails/screws/etc... and I've never had one that wasn't a super slow leak. I know that exists (clearly, you had one), but I've never personally experienced one.