Spare tire

A spare tire allows a driver to replace a flat tire and drive on
A Stepney rim. An early approach to providing a car with a spare tire
Dual sidemounted spare tires behind the front fenders on a 1931 Nash Ambassador
Temporary use "space-saver" spare tire mounted in the trunk of a 1970 AMC AMX with a single use air canister
Full size spare tire mounted in cargo space area of a 1993 Jeep Grand Cherokee
Full size spare tire stowed in the engine bay of a Renault 14
"Donut" type tire on a Chevrolet Lacetti
Bristol's traditional wing-mounted spare wheel on a Bristol 410

A spare tire (or stepney in some countries[1]) is an additional tire (or tyre - see spelling differences) carried in a motor vehicle as a replacement for one that goes flat, has a blowout, or has another emergency. Spare tire is generally a misnomer, as almost all vehicles actually carry an entire wheel with a tire mounted on it as a spare rather than just a tire, as fitting a tire to a wheel would require a motorist to carry additional, specialized equipment. However, some spare tires ("space-saver" and "donut" types) are not meant to be driven long distances.[2] Space-savers have a maximum speed of around 50 mph (80 km/h).[3]

When replacing a damaged tire, placing the compact spare on a non-drive axle will prevent damage to the drivetrain. If placed on a drivetrain axle, the smaller-diameter tire can put stress on the differential causing damage and reducing handling.[4]

  1. ^ Cite error: The named reference stepneyOED was invoked but never defined (see the help page).
  2. ^ Toyota Corolla 2016, Page 529, The compact spare tire is identified by the label "TEMPORARY USE ONLY" on the tire sidewall. Use the compact spare tire temporarily, and only in an emergency
  3. ^ Toyota Corolla 2016, Page 530, "Do not drive at speeds in excess of 50 mph (80 km/h) when a compact spare tire is installed on the vehicle. The compact spare tire is not designed for driving at high speeds. Failure to observe this precaution may lead to an accident causing death or serious injury."
  4. ^ "How Long Can You Really Use Your Spare Tire?". popularmechanics.com. 29 March 2012. Retrieved 12 April 2018.

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