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against a perfectly round test wheel. As the wheel turns, it turns the tire, and the tire carcass undergoes repeated deformation and recovery as it enters and exits the contact area. If we measure the lateral force between the tire and the wheel we will see zero change as the tire turns. If we now
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Consider a good tire with LFV of 4 pounds. This tire will induce a 4 pound force sideways into the vehicle every rotation. The frequency of the force will increase in direct proportion to rotating speed. This effect will influence the steering of the vehicle. Tire makers test tires at the point
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is a property of a tire that characterizes its dynamic behavior of these forces. High values of LFV for a given tire reflect a high level of manufacturing variations in the tire structure that will impart ride disturbances into the vehicle in the lateral, or steering, direction. LFV is measured
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LFV is a complex waveform. It is expressed using several standard methods, including peak-to-peak, first harmonic, second harmonic, and higher-order harmonics. In production LFV testing these are reported as both magnitudes and angles.
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of manufacture to verify that the LFV is within allowable quality limits. Tires that exceed these limits may be scrapped or sold to markets that do not require stringent quality.
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LFV can best be explained by example. Assume a perfectly uniform tire mounted on a perfectly round wheel loaded with a constant
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Tires provide for steering, traction, braking, and load support by transmitting forces between the vehicle and the road.
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test a typical production tire we will see the lateral force vary as the tire turns.
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in ASTM F1806 – Standard
Practice for Tire Testing.
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782:This article about an automotive technology is a
43:but its sources remain unclear because it lacks
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156:http://www.freepatentsonline.com/3946527.html
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688:European Tyre and Rim Technical Organisation
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74:Learn how and when to remove this message
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91:according to processes specified by the
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772:
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731:Uniform Tire Quality Grading (UTQG)
786:. You can help Knowledge (XXG) by
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774:
754:
753:
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587:Tire-pressure monitoring system
1:
577:Central Tire Inflation System
88:Lateral force variation (LFV)
838:Automotive technology stubs
698:Tire Science and Technology
218:Low rolling resistance tire
854:
769:
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29:This article includes a
539:Slip (vehicle dynamics)
496:Lateral Force Variation
446:Pacejka's Magic Formula
426:Cold inflation pressure
58:more precise citations.
635:List of tire companies
506:Traction (engineering)
501:Radial Force Variation
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486:Tire load sensitivity
101:
466:Self aligning torque
102:Force variation axes
592:Tire-pressure gauge
228:Michelin PAX System
630:Tire manufacturing
461:Rolling resistance
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93:ASTM International
31:list of references
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456:Relaxation length
333:Formula One tyres
119:Waveform analysis
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749:Outline of tires
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562:Tire maintenance
511:Treadwear rating
421:Circle of forces
343:Continental tire
283:Orange oil tires
273:Mud-terrain tire
253:All-terrain tire
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54:this article by
45:inline citations
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491:Tire uniformity
451:Pneumatic trail
441:Ground pressure
436:Cornering force
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376:Siping (rubber)
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318:Motorcycle tyre
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144:Traction circle
134:Cornering force
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35:related reading
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708:Identification
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670:Ozone cracking
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650:Tire recycling
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476:Steering ratio
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288:Whitewall tire
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150:External links
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39:external links
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680:Organizations
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567:Tire rotation
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534:Groove wander
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431:Contact patch
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293:Aircraft tire
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223:Run-flat tire
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208:Tubeless tire
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788:expanding it
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693:Tire Society
607:Tire changer
602:Bead breaker
572:Bicycle pump
481:Tire balance
391:Presta valve
386:Dunlop valve
328:Racing slick
323:Tractor tire
308:Tubular tire
303:Bicycle tire
233:Airless tire
122:
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50:Please help
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721:Plus sizing
645:Waste tires
597:Direct TPMS
582:Tire mousse
554:Maintenance
529:Aquaplaning
298:Tundra tire
278:Paddle tire
263:Knobby tire
213:Radial tire
56:introducing
827:Categories
726:Tire label
622:Life cycle
544:Tramlining
471:Slip angle
408:Attributes
381:Valve stem
353:Components
338:Spare tire
268:Large tire
64:April 2021
716:Tire code
665:Flat tire
655:Tire fire
612:Tire iron
521:Behaviors
313:Lego tire
248:Snow tire
243:Rain tyre
759:Category
366:Beadlock
258:Bar grip
128:See also
660:Blowout
640:Retread
52:improve
833:Tires
371:Tread
238:Tweel
200:Types
192:Tires
108:force
37:, or
784:stub
361:Bead
829::
41:,
33:,
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808:t
801:v
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184:e
177:t
170:v
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71:(
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62:(
48:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
