Overland Park Auto Repair

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Monthly Archives: September 2020

Why Is The Spare Tire So Small?

Why Is The Spare Tire So Small?

Today is your lucky day; you randomly got a flat tire. As you swallow down the sarcasm and pop the trunk, you notice that the spare tire is much smaller than the regular tire. While a few vehicles may come with a full-size spare tire, most come with a thin, fragile tire popularly called a ‘donut.’ In hindsight, this has left many drivers wondering: why is the spare tire so much smaller than the regular tires?  Since the spare tires are small, it maximizes trunk space. The spares have a shallow tread with a narrow width and small diameter. The lighter material for the spare tire also makes it easy to lift and install onto the vehicle.  Small spare tires keep the weight of the vehicle down. If a spare tire were the size of a regular tire, it would add additional weight to the car. Any extra weight added can cause reduced fuel efficiency.  The spare is small because it’s a temporary fix. Most spares are good for about 100 miles driven u ... read more