Spares lose air sitting unused, just like regular tires. Most temporary spares need 60 PSI (much higher than a regular tire). A flat spare is useless when you need it most.
Check spare pressure every 6 months. Top up with a gas station compressor or a small 12V inflator.
If your spare is flat or non-existent, we flatbed to a tire shop at $249 / hour rate.
