Symptoms
- Just used the spare after a flat
- Unsure how far or fast it's safe to drive
- Spare looks smaller than the other tires
Likely causes
- CommonCompact spares are designed for limited useThey're built lighter and smaller to save space and weight, not for daily driving.
What to do
- Check the sidewall of the spare for its specific speed and mileage limits, often printed directly on it.
- As a general rule, keep speed under 50 mph and mileage under about 50–70 miles unless your manual says otherwise.
- Avoid highway driving with a donut spare when possible.
- Get the flat tire repaired or replaced as soon as reasonably possible.
- Check the spare's air pressure regularly since it's rarely inspected and can be dangerously low when needed.
Tools and parts
- Tire pressure gauge
Full-size spare tire (optional upgrade)Search: “full-size spare tire for [your car model]”
When to call a pro
Once the original tire is fixed or replaced, have the spare reinstalled in its storage spot and check it's properly inflated for next time.
Safety
Use caution
Compact spares handle and brake differently than regular tires; drive gently and avoid hard cornering or braking.