Whether a spare tire is worth it depends on your driving habits, vehicle type, and tolerance for inconvenience. For most drivers, a full-size spare offers peace of mind but adds weight and reduces cargo space, while a compact spare or tire repair kit can save money and fuel. However, if you frequently drive in remote areas or harsh conditions, a spare tire is a wise investment.
What Are the Different Types of Spare Tires?
There are three main types: full-size spares, compact (donut) spares, and temporary repair kits. Full-size spares match your regular tires and can be used long-term, but they weigh 30-50 pounds and take up significant trunk space. Compact spares are lighter (20-30 pounds) and smaller, but they limit speed to 50 mph and range to 50-70 miles. Repair kits, which include sealant and a compressor, weigh under 5 pounds but only fix small punctures and ruin the tire for professional repair.
When Is a Spare Tire Worth It?
A spare tire is worth it if you often drive in rural areas, during winter, or on rough roads where tire damage is more likely. It also benefits those who cannot change a tire quickly or who carry heavy loads. For example, if you commute on a highway with no shoulder, a spare lets you fix a flat without waiting for roadside assistance. However, if you mostly drive in cities with quick access to help, a repair kit may suffice.
What Are the Downsides of Carrying a Spare?
The main downsides are added weight (reducing fuel economy by 1-2%), lost cargo space, and the cost of the spare and jack. A full-size spare can cost $100-$300, and the jack and tools add another $50-$100. Additionally, spares can be stolen, and donut spares require careful driving and timely replacement. Many modern cars skip spares to save weight and meet fuel efficiency standards, relying instead on run-flat tires or repair kits.
Are Run-Flat Tires or Repair Kits Better Alternatives?
Run-flat tires allow you to drive up to 50 miles at 50 mph after a puncture, eliminating the need for a spare. However, they cost 50-100% more than regular tires, provide a harsher ride, and cannot be repaired if damaged. Repair kits are cheap and lightweight, but they only work for small punctures and can damage the tire pressure monitoring system (TPMS). For most drivers, a compact spare strikes the best balance between utility and convenience.
Frequently Asked Questions
Should I buy a full-size spare or a donut?
Choose a full-size spare if you have the space and want to avoid speed/range limits, especially for long trips or off-road driving. A donut is fine for city driving and short commutes, but remember to replace it with a proper tire as soon as possible.
Can I use a spare tire from a different vehicle?
Only if the bolt pattern, offset, and load rating match your vehicle. Using an incompatible spare can damage your drivetrain or cause unsafe handling. Always check your owner’s manual for specifications.
How often should I check my spare tire?
Check the spare’s pressure every time you rotate your tires (every 5,000-7,500 miles) and inspect for dry rot or damage. A spare that is flat or cracked is useless in an emergency.
The Bottom Line
A spare tire is worth it if you value self-reliance and drive in conditions where flats are common. For most city drivers, a compact spare or repair kit is sufficient and saves weight and space. Consider your typical driving environment and personal comfort with roadside assistance before deciding. For more tire tips, check out our tire guides.
More Tires Guides
Video Guide
Video: Related tutorial from YouTube