2023 FORD SUPER DUTY tires

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 (page490).
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!
Use the recommended coldinflation pressure for optimum tireperformance and wear.Under-inflation or over-inflationmay cause uneven treadwearpatterns.
Always inflate your tires to therecommended inflation pressureeven if it is less than the maximuminflation pressure informationfound on the tire. You will find aTire Label containing themanufacturer's recommended tireinflation pressure by the tire sizeand other important informationlocated 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.
Note:If you have to drive adistance to get air for your tire(s),check and record the tire pressurefirst and add the appropriate airpressure when you get to thepump. It is normal for tires to heatup and the air pressure inside to goup as you drive.
To check the pressure in yourtire(s):
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1. Make sure the tires are cool,meaning they are not hot fromdriving even a mile.
Note:If you are checking tirepressure when the tire is hot, (forexample, driven more than 1 mile[1.6 kilometers]), never bleed orreduce air pressure. The tires arehot from driving and it is normal forpressures to increase aboverecommended cold pressures. Ahot tire at or below recommendedcold inflation pressure could besignificantly under-inflated.
2. Remove the cap from the valveon one tire, then firmly press thetire gauge onto the valve andmeasure the pressure.
3. Add enough air to reach therecommended air pressure.
Note:If you overfill the tire, releaseair by pressing on the metal stemin the center of the valve. Thenrecheck the pressure with your tiregauge.
4. Replace the valve cap.
5. Repeat this procedure for eachtire, including the spare.
Note:Some spare tires operate ata higher inflation pressure than theother tires. For T type mini-sparetires, (see the Dissimilar sparewheel and tire assemblyinformation for a description. Storeand maintain at 60 psi(4.15 bar)60 psi (4.15 bar). Forfull-size and dissimilar spare tires,see the Dissimilar spare wheel andtire assembly information for adescription. Store and maintain atthe higher of the front and rearinflation pressure as shown on theSafety Compliance CertificationLabel or Tire Label.
Note:Do not reduce tire pressureto change the ride characteristicsof the vehicle. If you do notmaintain the inflation pressure atthe levels specified by Ford, yourvehicle may experience a conditionknown as shimmy. Shimmy is asevere vibration and oscillation inthe steering wheel after the vehicletravels over a bump or dip in theroad that does not dampen out byitself. Shimmy may result fromsignificant under-inflation of thetires, improper tires (load range,size, or type), or vehiclemodifications such as lift-kits. Inthe event that your vehicleexperiences shimmy, you shouldslowly reduce speed by either liftingoff the accelerator pedal or lightlyapplying the brakes. The shimmywill cease as the vehicle speeddecreases.
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When weather temperaturechanges occur, tire inflationpressures also change. A 10°F(6°C) temperature drop cancause a corresponding drop of 1psi (7 kPa) in inflation pressure.Check your tire pressuresfrequently and adjust them to theproper pressure which can befound on the Safety ComplianceCertification Label or Tire Label.
Checking Pressure when tiresare hot:
If pressures are checked after tireshave been driven for more thanthree minutes or more than 1 mile,(2 km) the tires become hot andthe pressures will increase byapproximately 4 psi (27.6 kPa).Therefore when the tire pressure
is adjusted under these conditions,it should be increased to a gaugereading of 4 psi (27.6 kPa) greaterthan the recommended coldinflation pressure.
For Example Only
33 psi (230kPa)Gauge readingof hot tire
32 psi (220kPa)If recom-mended, coldinflation pres-sure is
The hot tire pressure is only 1 psi(10 kPa) greater than therecommended cold inflationpressure. Therefore, add 3 psi(20 kPa) more to increase thehot pressure to 4 psi (30 kPa)over the recommended coldinflation pressure.
36 psi (250kPa)New hot pres-sure
Steel Carcass Plies
WARNING: An inflated tireand rim can be very dangerousif improperly used, serviced ormaintained. To reduce the riskof serious injury, never attemptto re-inflate a tire which hasbeen run flat or seriouslyunder-inflated without firstremoving the tire from the wheelassembly for inspection. Do notattempt to add air to tires orreplace tires or wheels withoutfirst taking precautions toprotect persons and property.
All tires with Steel Carcass Plies(if equipped):
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This type of tire utilizes steel cordsin the sidewalls. As such, theycannot be treated like normal lighttruck tires. Tire service, includingadjusting tire pressure, must beperformed by personnel trained,supervised and equippedaccording to Federal OccupationalSafety and Health Administrationregulations. For example, during
any procedure involving tireinflation, the technician orindividual must utilize a remoteinflation device, and ensure thatall persons are clear of thetrajectory area.
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.
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INSPECTING THE TIRE FOR
WEAR
When the tread is worn down to2/32 inch (1.6 mm), tires must bereplaced to help prevent yourvehicle from skidding andhydroplaning. Built-in treadwearindicators, or wear bars, whichlook like narrow strips of smoothrubber across the tread willappear on the tire when the treadis worn down to 2/32 inch (1.6mm).
When the tire tread wears downto the same height as these wearbars, the tire is worn out and mustbe replaced.
The tires should also be balancedperiodically. An unbalanced tireand wheel assembly may result inirregular tire wear.
Periodically inspect the tire treadsfor uneven or excessive wear andremove objects such as stones,nails or glass that may be wedgedin the tread grooves.
INSPECTING THE TIRE FOR
DAMAGE
Inspect the tire sidewalls forcracking, cuts, bruises and othersigns of damage or excessivewear. If internal damage to the tireis suspected, have the tiredismounted and inspected in caseit needs to be repaired or replaced.For your safety, tires that aredamaged or show signs ofexcessive wear should not be usedbecause they are more likely toblow out or fail.
Periodically inspect the tire treadsand sidewalls for damage, suchas bulges in the tread or sidewalls,cracks in the tread groove andseparation in the tread or sidewall.If damage is observed orsuspected, have the tire inspectedby a tire professional.
Tires can be damaged duringoff-road use, so inspection afteroff-road use is alsorecommended.
Safety Practices
WARNING: If your vehicleis stuck in snow, mud or sand, do
not rapidly spin the tires;spinning the tires can tear thetire and cause an explosion. Atire can explode in as little asthree to five seconds.
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WARNING: Do not spin thewheels at over 34 mph(55 km/h). The tires may fail andinjure a passenger or bystander.
HIGH SPEED DRIVING CAN BEDANGEROUS
Correct inflation pressure isespecially important. However, athigh speeds, even with the correctinflation pressure, a road hazardfor example is more difficult toavoid and if contact is made, hasa greater chance of causing tiredamage than at a lower speed.Moreover, driving at high speedreduces the reaction timeavailable to avoid accidents andbring your vehicle to a safe stop.
If you see any damage to a tire orwheel, replace it with the spare atonce and visit a participating TireRetailer.
Exceeding the maximum speedsshown on the following page foreach type of tire will cause the tireto build up excessive heat whichcan cause tire damage that couldresult in sudden tire destructionand rapid air loss. Failure tocontrol a vehicle when one ormore tires experience a sudden airloss can lead to an accident.
In any case, you should notexceed reasonable speeds asindicated by the legal limitsand driving conditions.
DO NOT OVERLOAD: DRIVINGON ANY OVERLOADED TIRE ISDANGEROUS
The maximum load rating of yourtires is molded on the tire sidewall.Do not exceed this rating. Followthe loading instructions of themanufacturer of your vehicle andthis will ensure that your tires arenot overloaded. Tires which areloaded beyond their maximumallowable loads for the particularapplication will build up excessiveheat that may result in sudden tiredestruction. Do not exceed thegross axle weight rating for anyaxle on your vehicle.
TIRE ALTERATIONS
Do not make or allow to be made
any alterations on your tires.Alterations may prevent properperformance, leading to tiredamage which can result in anaccident. Tires which becomeunserviceable due to alterationssuch as truing, whitewall inlays,addition of balancing or sealantliquids, or the use of tire dressingcontaining petroleum distillatesare excluded from warrantycoverage.
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REPAIRS - WHEREVERPOSSIBLE, SEE YOUR TIRERETAILER AT ONCE
If any tire sustains a puncture,have the tire demounted andthoroughly inspected by a tireretailer for possible damage thatmay have occurred. A tread areapuncture in any passenger or lighttruck tire can be repaired providedthat the puncture hole is not morethan 1/4” in diameter, not morethan one radial cable per casingply is damaged, and the tire hasnot been damaged further by thepuncturing object or by runningunderinflated. Tire puncturesconsistent with these guidelinesshould only be repaired byfollowing the US TireManufacturers Association(USTMA) recommended repairprocedures. Plug-only repairsdone on-the-wheel are consideredimproper and therefore, notrecommended. Such repairs arenot reliable and may cause furtherdamage to the tire.
STORAGE
Tires contain waxes andemollients to protect their outersurfaces from ozone and weatherchecking. As the tire rolls andflexes, the waxes and emollientscontinually migrate to the surface,replenishing this protectionthroughout the normal use of thetire. Consequently, when tires situnused for long periods of time (amonth or more) their surfaces
become dry and more susceptibleto ozone and weather checkingand the casing becomessusceptible to flat spotting.Forthis reason, tires should alwaysbe stored in a cool, dry, clean,indoor environment. If storageis for one month or more,eliminate the weight from thetires by raising the vehicle or byremoving the tires from thevehicle. Failure to store tires inaccordance with theseinstructions could result indamage to your tires orpremature aging of the tiresand sudden tire failure.
When tires are stored, be sure theyare placed away from sources ofheat and ozone such as directsunlight, hot pipes and electricgenerators. Be sure that surfaceson which tires are stored are cleanand free from grease, gasoline orother substances, which coulddeteriorate the rubber. Failure tostore tires in accordance withthese instructions could result indamage to your tires or prematureaging of the tires and sudden tirefailure.
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FOLLOW THESE MOUNTINGRECOMMENDATIONS
Tire changing can be dangerousand must be done byprofessionally trained personsusing proper tools andprocedures as specified by theUS Tire ManufacturersAssociation (USTMA). Singleor dual assemblies must becompletely deflated beforedemounting.
Your tires should be mounted onwheels of correct size and typeand which are in good, cleancondition. Wheels that are bent,chipped, rusted (steel wheels) orcorroded (alloy wheels) maycause tire damage. The inside ofthe tire must be free from foreignmaterial. Have your retailer checkthe wheels before mounting newtires. Mismatched tires and rimscan explode during mounting.Also, mismatched tires and rimscan result in dangerous tire failureon the road. If a tire is mounted byerror on the wrong-sized rim, donot remount it on the proper rim -scrap it. It may have beendamaged internally (which is notexternally visible) by having beendangerously stretched and couldfail on the highway.
Old valves may leak. When newtubeless tires are mounted,have new valves of the correcttype installed. Tubeless tiresmust only be mounted onwheels designed for tubelesstires i.e., wheels which havesafety humps or ledges.
It is recommended that you haveyour tires and wheels balanced.Tires and wheels, which are notbalanced, may cause steeringdifficulties, a bumpy ride, andirregular tire wear.
Be sure that all your valveshave suitable valve caps. Thevalve cap is the primary sealagainst air loss.
TEMPORARY SPARE TIRES
When using any temporary sparetire, be sure to follow the vehiclemanufacturer’s instructions.
REMEMBER... TO AVOIDDAMAGE TO YOUR TIRES ANDPOSSIBLE ACCIDENT:
•CHECK TIRE PRESSURE ATLEAST ONCE EACH MONTHWHEN TIRES ARE COLD ANDBEFORE LONG TRIPS.
•DO NOTUNDERINFLATE/OVERINFLATE.
•DO NOT OVERLOAD.
•DRIVE AT MODERATESPEEDS, OBSERVE LEGALLIMITS.
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