Ensure the spare can support your vehicle's weight. Temporary spares often have a maximum speed limit of 50 mph .

If your car lacks a spare, you may need to purchase a mounting kit, jack, and lug wrench separately. 3. Spare Tires vs. Inflation Kits

Most temporary spares are designed for no more than 50 miles of travel at a maximum speed of 50 mph .

These are smaller and lighter than regular tires. They are designed only to get you to a repair shop.