runflat

Drive while deflated

A runflat tire is designed to keep functioning after losing air pressure, allowing a driver to continue for a limited distance rather than stopping immediately.

The reinforced sidewalls support the vehicle's weight even when deflated: The runflat got me to the shop without changing it on the highway.

Also spelled run-flat.

components

sidewall

Lateral tire surface

treadSurface that grips ground
rimCircular outer boundary
beadPierced ornament for threading

carcass · plies · valve · insert · reinforcement · spoke · hub

technology

puncture-resistant

Able to block piercing

self-supportingAble to maintain oneself
airlessHaving no atmosphere
military-gradeMeeting armed forces standards

armored · Bridgestone · Michelin · Goodyear · Pirelli · load-bearing · heat-resistant

convenience

mobility

Capacity for movement

low-maintenanceRequiring little care
time-savingReducing required duration
availabilityState of being obtainable

applications

BMW

Bavarian motor works

MercedesPremium German automaker

performance

stability

Resistance to displacement

handlingTreatment or management
corneringForcing into position
brakingReducing speed deliberately

traction · durability

Opposites

tire puncture response

runflatpneumatic tire

Air-filled rubber wheel covering

flat tire · blown tire · tubeless tire

backup system approach

runflatspare tire

Emergency replacement wheel

spare · donut spare · roadside assistance

Family

run, flat, runs, running, runner, runners, runaway, runaways, outrun

Familiarity: Top 500,000
Profile: Used worldwide · Timeless · Concrete · Rated G