2023 FORD BRONCO tire size

C.80: Indicates the aspect ratiowhich gives the tire's ratio ofheight to width. Numbers of 70 orlower indicate a short sidewall.
D.D: Indicates a diagonal type tire.
R: Indicates a radial type tire.
E.16: Indicates the wheel or rimdiameter in inches. If you changeyour wheel size, you will have topurchase new tires to match thenew wheel diameter.
GLOSSARY OF TIRE
TERMINOLOGY
*Tire label: A label showing theoriginal equipment tire sizes,recommended inflation pressureand the maximum weight thevehicle can carry.
*Tire Identification Number(TIN): A number on the sidewallof each tire providing informationabout the tire brand andmanufacturing plant, tire size anddate of manufacture. Also referredto as DOT code.
*Inflation pressure: A measureof the amount of air in a tire.
*Standard load: A class ofP-metric or Metric tires designedto carry a maximum load at setpressure. For example: ForP-metric tires 35 psi (2.4 bar) andfor Metric tires 36 psi (2.5 bar).Increasing the inflation pressurebeyond this pressure will not
increase the tire’s load carryingcapability.
*Extra load: A class of P-metricor Metric tires designed to carry aheavier maximum load at 42 psi(2.9 bar). Increasing the inflationpressure beyond this pressure willnot increase the tire’s loadcarrying capability.
*kPa: Kilopascal, a metric unit ofair pressure.
*PSI: Pounds per square inch, astandard unit of air pressure.
*Cold tire pressure: The tirepressure when the vehicle hasbeen stationary and out of directsunlight for an hour or more andprior to the vehicle being driven for1 mi (1.6 km).
*Recommended inflationpressure: The cold inflationpressure found on the SafetyCompliance Certification Label(affixed to either the door hingepillar, door-latch post, or the dooredge that meets the door-latchpost, next to the driver's seatingposition), or Tire Label located onthe B-Pillar or the edge of thedriver door.
* B-pillar: The structural memberat the side of the vehicle behindthe front door.
*Bead area of the tire: Area ofthe tire next to the rim.
* Sidewall of the tire: Areabetween the bead area and thetread.
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*Tread area of the tire: Area ofthe perimeter of the tire thatcontacts the road when mountedon the vehicle.
*Rim: The metal support (wheel)for a tire or a tire and tubeassembly upon which the tirebeads are seated.
TIRE REPLACEMENT
REQUIREMENTS
AGE
WARNING: Tires degradeover time depending on manyfactors such as weather, storageconditions, and conditions of use(load, speed, inflation pressure)the tires experience throughouttheir lives.In general, tires should bereplaced after six yearsregardless of tread wear.However, heat caused by hotclimates or frequent high loadingconditions can accelerate theaging process and may requiretires to be replaced morefrequently.You should replace your sparetire when you replace the roadtires or after six years due toaging even if it has not beenused.
U.S. DOT Tire IdentificationNumber
Both United States and CanadaFederal regulations require tiremanufacturers to placestandardized information on thesidewall of all tires. Thisinformation identifies anddescribes the fundamentalcharacteristics of the tire and alsoprovides a U.S. DOT TireIdentification Number for safetystandard certification and in caseof a recall.
This begins with the letters DOTand indicates that the tire meetsall federal standards. The nexttwo numbers or letters are theplant code designating where itwas manufactured, the next twoare the tire size code and the lastfour numbers represent the weekand year the tire was built. Forexample, the numbers 317 meanthe 31st week of 1997. After 2000,the numbers go to four digits. Forexample, 2501 means the 25thweek of 2001. The numbers inbetween are identification codesused for traceability. Thisinformation is used to contactcustomers if a tire defect requiresa recall.
Tire ReplacementRequirements
Your vehicle is equipped with tiresdesigned to provide a safe rideand handling capability.
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WARNING: Only usereplacement tires and wheelsthat are the same size, loadindex, speed rating and type(such as P-metric versusLT-metric or all-season versusall-terrain) as those originallyprovided by Ford. Therecommended tire and wheelsize may be found on either theSafety Compliance CertificationLabel (affixed to either the doorhinge pillar, door-latch post, orthe door edge that meets thedoor-latch post, next to thedriver's seating position), or theTire Label which is located onthe B-Pillar or edge of thedriver's door. If this informationis not found on these labels, thenyou should contact yourauthorized dealer as soon aspossible. Use of any tire or wheelnot recommended by Ford canaffect the safety andperformance of your vehicle,which could result in anincreased risk of loss of vehiclecontrol, vehicle rollover, personalinjury and death.
WARNING: To reduce therisk of serious injury, whenmounting replacement tires andwheels, you should not exceedthe maximum pressure indicatedon the sidewall of the tire to setthe beads without additionalprecautions listed below. If thebeads do not seat at themaximum pressure indicated,re-lubricate and try again.
WARNING: For a mountingpressure more than 20 psi(1.38 bar) greater than themaximum pressure, a Forddealer or other tire serviceprofessional should do themounting.
WARNING: Always inflatesteel carcass tires with a remoteair fill with the person inflatingstanding at a minimum of 12 ft(3.66 m) away from the wheeland tire assembly.
WARNING: When inflatingthe tire for mounting pressuresup to 20 psi (1.38 bar) greaterthan the maximum pressure onthe tire sidewall, the followingprecautions must be taken toprotect the person mounting thetire:
•Make sure that you have thecorrect tire and wheel size.
•Lubricate the tire bead andwheel bead seat area again.
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•Stand at a minimum of 12 ft(3.66 m) away from the wheeland tire assembly.
•Use both eye and earprotection.
Important: Remember to replacethe wheel valve stems when theroad tires are replaced on yourvehicle.
If a four tire rotation is beingfollowed, it is recommended thatboth front tires or both rear tiresgenerally be replaced as a pair ifthe two remaining worn tires stillhave usable tread depth. If a fivetire rotation is being followed andthe fifth tire is used to replace asingle unrepairable tire, a four tirerotation should be followed withthe undamaged tires. Any
replacement for the damaged tireshould be used as a dedicatedspare until the remaining tires arereplaced as a set.
To avoid potential Four-WheelDrive (4WD) malfunction or(4WD) system damage, it isrecommended to replace all tiresused in the tire rotation ratherthan mixing significantly worn tireswith new tires.
The tire pressure sensors mountedin the wheels (originally installedon your vehicle) are not designedto be used in aftermarket wheels.
The use of wheels or tires notrecommended may affect theoperation of your tire pressuremonitoring system.
If the tire pressure monitoringsystem indicator is flashing, yoursystem is malfunctioning. Yourreplacement tire might beincompatible with your tirepressure monitoring system, orsome component of the systemmay be damaged.
USING SNOW CHAINS
WARNING: Do not exceed 30 mph(50 km/h). Failure to follow thisinstruction could result in the loss ofcontrol of your vehicle, personal injury ordeath.
WARNING: Do not use snow chainson snow-free roads.
WARNING: Only fit snow chains tospecified tires.
WARNING: If your vehicle is fittedwith wheel trims, remove them beforefitting snow chains.
WARNING: If you choose to installsnow tires on your vehicle, they must bethe same size, construction, and loadrange as the original tires listed on thetire placard, and they must be installedon all four wheels. Mixing tires ofdifferent size or construction on yourvehicle can adversely affect yourvehicle's handling and braking, and maylead to loss of vehicle control.
Only use snow chains on rear wheels.Install snow chains in pairs. Do not useself-tensioning snow chains.
Only use snow chains on the followingspecified tire sizes:
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•255/70R16
•Only install chains that are 15 mmor less.
•255/75R17
•Only install chains that are 15 mmor less.
We recommend you use steel wheels ofthe same size and specification if snowchains are required because chains maychip aluminum wheels.
Follow these guidelines when using snowtires and traction devices:
•If possible, avoid fully loading yourvehicle.
•Purchase snow chains from amanufacturer that clearly labels bodyto tire dimension restrictions.
•When driving with snow chains do notexceed 30 mph (50 km/h) or themaximum speed recommended by thechain manufacturer, whichever is less.
•Drive cautiously. If you hear the snowchains rub or bang against the vehicle,stop and tighten them. If this does notwork, remove the snow chains toprevent vehicle damage.
•Remove the snow chains when theyare no longer needed. Do not use snowchains on dry roads.
•If a temporary spare wheel is mountedon your vehicle, do not use snow chainson the axle with the temporary sparewheel.
Use snow chains that fit against thesidewall of the tire to prevent the chainsfrom touching the wheel rims orsuspension, see following illustrationabove.
If you have any questions regarding snowchains, please contact your authorizeddealer.
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CHECKING THE TIRE
PRESSURES
Safe operation of your vehiclerequires that your tires areproperly inflated. Every day beforeyou drive, check your tires.
At least once a month and beforelong trips, inspect each tire andcheck the tire pressure with a tiregauge. Inflate all tires to therecommended inflation pressure.See Inflating the Tires (page441).
INFLATING THE TIRES
WARNING: Under-inflationis the most common cause oftire failures and may result insevere tire cracking, treadseparation or blowout, withunexpected loss of vehiclecontrol and increased risk ofinjury. Under-inflation increasessidewall flexing and rollingresistance, resulting in heatbuildup and internal damage tothe tire. It also may result inunnecessary tire stress, irregularwear, loss of vehicle control andaccidents. A tire can lose up tohalf of its air pressure and notappear to be flat!
WARNING: Do not use thetire pressure displayed in theinformation display as a tirepressure gauge. Failure to followthis instruction could result inpersonal injury or death.
Use the recommended coldinflation pressure for optimum tireperformance and wear.Under-inflation or over-inflationmay cause uneven treadwearpatterns.
Inflate your tires to therecommended inflation pressureeven if it is less than the maximuminflation pressure informationfound on the tire. You can find thetire label with the recommendedtire inflation pressure next to thetire size on the B-Pillar or the edgeof the driver door.
The recommended tire inflationpressure is also found on theSafety Compliance CertificationLabel, affixed to either the doorhinge pillar, door-latch post, or thedoor edge that meets thedoor-latch on the B-pillar, or onthe edge of the driver door.
Failure to follow the tire pressurerecommendations can causeuneven treadwear patterns andadversely affect the way yourvehicle handles.
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WHAT IS THE TIRE PRESSURE
MONITORING SYSTEM
Tire Pressure Monitoring System withIndividual Tire Pressure Display
The tire pressure monitoringsystem measures the vehicle'stire pressures. A warning lampilluminates if one or more tires aresignificantly underinflated or if there is asystem malfunction.
TIRE PRESSURE MONITORING
SYSTEM OVERVIEW
WARNING: Under-inflation is themost common cause of tire failures andmay result in severe tire cracking, treadseparation or blowout, with unexpectedloss of vehicle control and increased riskof injury. Under-inflation increasessidewall flexing and rolling resistance,resulting in heat buildup and internaldamage to the tire. It also may result inunnecessary tire stress, irregular wear,loss of vehicle control and accidents. Atire can lose up to half of its air pressureand not appear to be flat!
WARNING: To determine therequired pressure(s) for your vehicle, seethe Safety Compliance CertificationLabel (on the door hinge pillar,door-latch post or the door edge thatmeets the door-latch post, next to thedriver seat) or the Tire Label on theB-Pillar or the edge of the driver door.
Each tire, including the spare (if provided),should be checked monthly when cold andinflated to the inflation pressurerecommended by the vehicle manufactureron the vehicle placard or tire inflationpressure label. (If your vehicle has tires ofa different size than the size indicated onthe vehicle placard or tire inflation pressurelabel, you should determine the proper tireinflation pressure for those tires).
As an added safety feature, your vehiclehas been equipped with a Tire PressureMonitoring System (TPMS) thatilluminates a low tire pressure telltalewhen one or more of your tires issignificantly under-inflated. Accordingly,when the low tire pressure telltaleilluminates, you should stop and checkyour tires as soon as possible, and inflatethem to the proper pressure. Driving on asignificantly under-inflated tire causes thetire to overheat and can lead to tire failure.Under-inflation also reduces fuel efficiencyand tire tread life, and may affect thevehicle’s handling and stopping ability.
Please note that the TPMS is not asubstitute for proper tire maintenance, andit is the driver’s responsibility to maintaincorrect tire pressure, even if under-inflationhas not reached the level to triggerillumination of the TPMS low tire pressuretelltale.
Your vehicle has also been equipped witha TPMS malfunction indicator to indicatewhen the system is not operating properly.The TPMS malfunction indicator iscombined with the low tire pressuretelltale. When the system detects amalfunction, the telltale will flash forapproximately one minute and then remaincontinuously illuminated. This sequencewill continue upon subsequent vehiclestart-ups as long as the malfunction exists.
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22.Stow the jack and tools in the originallocations shown in the removalsection and tighten the retainingscrews by turning clockwise.
WHEEL NUTS - EXCLUDING: RAPTOR
Wheel Nut Torque Specifications
WARNING: When you install a wheel, always remove any corrosion, dirt or foreignmaterials present on the mounting surfaces of the wheel or the surface of the wheelhub, brake drum or brake disc that contacts the wheel. Make sure to secure any fastenersthat attach the rotor to the hub so they do not interfere with the mounting surfaces ofthe wheel. Installing wheels without correct metal-to-metal contact at the wheelmounting surfaces can cause the wheel nuts to loosen and the wheel to come off whileyour vehicle is in motion, resulting in loss of vehicle control, personal injury or death.
WARNING: If the tire pressure monitor sensor becomes damaged it may notfunction.
lb.ft (Nm)*Bolt size
100 lb.ft (135 Nm)M12 X 1.5
*Torque specifications are for nut and bolt threads free of dirt and rust. Use only ourrecommended replacement fasteners.
Retighten the lug nuts to the specified torque within 100 mi (160 km) after any wheeldisturbance (such as tire rotation, changing a flat tire, wheel removal).
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