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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 ...
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Speed ratings with parentheses such as (W) and (Y) have maximum speeds set by the manufacturers. The load rating is often included within the parentheses, e.g. (86Y). Prior to 1991, tire speed ratings were shown inside the tire size, before the "R" construction type.
Run-flat tires eliminates the need for a spare tire because they can be traveled on at a reduced speed in the event of a puncture, using a stiff sidewall to prevent damage to the tire rim. [34] Vehicles without run-flat tires rely on a spare tire, which may be a compact tire, to replace a damaged tire. [34]
Spare tires (sometimes called "doughnuts") for modern cars are smaller than regular tires (to save trunk space, weight and cost) and should not be used to drive very far before replacement with a full-size tire. A few vehicle models use conventional size spare tires. Jacks and lug wrenches for emergency replacement of a flat tire with a spare ...
Few electric cars include spare tires, and manufacturers cite a wide variety of reasons — space, cost, even safety. But the main factor may be drivers who won't change a tire.