How Long Can You Drive on a Spare Tire (Donut)?
A compact spare is a get-home tire — not a substitute for a real tire. Here's what you can and cannot do on one.
Types of Spare Tires
| Type | Description | Driving Limits |
|---|---|---|
| Compact spare ("donut") | Smaller than regular tires, labeled T-type (e.g., T125/70R16) | 50 mph max / 50–70 miles max |
| Full-size matching spare | Same size and type as your regular tires | No special restriction — treat like a normal tire |
| Full-size non-matching spare | Same rim but different brand/model | Drive to a shop; don't leave it on long-term |
| Run-flat tire | Reinforced sidewall; no spare needed | Up to 50 miles at 50 mph after pressure loss (varies by brand) |
Compact Spare (Donut) Limits
The compact spare is temporary only. It is not designed for extended use.
- Speed limit: 50 mph maximum — the sidewall is marked "TEMPORARY USE ONLY — DO NOT EXCEED 50 MPH"
- Distance limit: 50–70 miles is typical, though some manuals allow up to 200 miles. Check your owner's manual for the exact limit.
- No highway passing/heavy traffic: The reduced grip and smaller size make the vehicle handle differently
What You Cannot Do on a Compact Spare
- Drive through a car wash (it can dislodge the spare)
- Tow a trailer or carry heavy loads
- Use traction control or stability control as effectively (the size mismatch confuses the system)
- Use it on an AWD vehicle without checking your manual first — the size difference can damage the drivetrain
Check the Spare Tire Pressure
Compact spares are typically inflated to 60 PSI — much higher than regular tires. Check the pressure when you get home; spare tires sitting in your trunk can lose pressure over years without being noticed.
What to Do Next
Get to a tire shop as soon as possible — ideally the same day. A donut spare is not a solution, it is a bridge to a real repair or replacement.
Frequently Asked Questions
Can I drive on the highway with a donut spare?
Technically yes, but keep it under 50 mph and exit as soon as possible. Compact spares are not rated for sustained highway speeds and the smaller size affects vehicle handling and braking.
Can I drive 200 miles on a compact spare?
Some manufacturers allow up to 200 miles; most recommend 50–70. Check your owner's manual. Even if mechanically allowed, it is not advisable — get the flat repaired or replaced as quickly as possible.
My AWD car has a flat — can I use the compact spare?
Check your owner's manual first. Many AWD manufacturers warn that using a compact spare can strain the drivetrain. Some recommend towing the vehicle to a shop instead of driving on the spare.
How do I check if my spare tire still has enough pressure?
Use a standard tire pressure gauge. Most compact spares require 60 PSI. Check it every 6–12 months even if you haven't used it — rubber valves can slowly leak.