13/09/2018
JOYALL TIRETESTING REPORT
11R22.5 Drive A878
Unit#3083
• Installation Date: 10/05/2018
• Installation Mileage: 518,009Km
• Tracking Date: 13/09/2018
• Tracking Mileage:592,168Km
• Tire mileage in driving: 74,159Km
Passenger Side
Driver Side
11R22.5 A878 Drive Tread Measurement
Driver Side
Tire PositionTread River
LFO/Drive98psi
17.42 15.47 18.6317.52 15.75 17.9818.17 15.78 15.7417.70 15.67 17.45 16.94
Tire PositionTread River
LRO/Drive98psi
17.42 15.47 18.6317.52 15.75 17.9818.17 15.78 15.7417.70 15.67 17.45 16.94
Tire PositionTread River
LFI/Drive97psi
17.75 15.08 16.8317.94 15.52 17.0618.75 15.99 17.9418.15 15.53 17.28 16.98
Tire PositionTread River
LRI/Drive98psi
17.71 15.16 15.7417.11 15 16.1317.42 15.3 16.4617.41 15.15 16.11 16.23
Driver Side Drive tires11R22.5 A878
Analysis on drive side tires
• HEEL AND TOE WEAR (SLIGHTLY)
• TIRE SIZE
• Heel and Toe Wear is seen most often on drive tires with block type tread patterns. Tread elements are taller on the front edge than the back edge.
• CAUSE
• Mismatched inflation pressures on dual tires and not rotating tires. Other causes include: high torque and driving in mountainous terrain.
• ACTION
• Maintain proper inflation pressures between 105~115psi
• Reversing the direction of rotation (if the tire is not directional) can extend service life. Consider less aggressive tread patterns in highway operations.
Driver Side Drive tires
11R22.5 A878
15,500Km~18,500Km per mm tread wear
Tire life between: 360,000Km~430,000Km in projection estimate
11R22.5 A878 Passenger Side Tread Measurement
Passenger Side
Tire PositionTread River
RFO/Drive99psi
17.02 15.34 17.9616.57 16.38 17.55
16.80 15.86 17.76 16.80
Tire PositionTread River
RFI/Drive99psi
17.67 16.92 17.7817.39 15.6 18.0117.69 15.41 18.0617.58 15.98 17.95 17.17
Tire PositionTread River
RRO/Drive98psi
16.40 14.62 17.4617.11 14.46 17.9716.25 15.29 17.4616.59 14.79 17.63 16.34
Tire PositionTread River
RRI/Drive98psi
17.68 15.99 17.8316.75 14.94 16.7317.19 15.04 16.6417.21 15.32 17.07 16.53
Analysis of passenger side tires
HEEL AND TOE WEAR (SLIGHTLY)
TIRE SIZE
Heel and Toe Wear is seen most often on drive tires with block type tread patterns. Tread elements are taller on the front edge than the back edge.
CAUSE
Mismatched inflation pressures on dual tires and not rotating tires. Other causes include: high torque and driving in mountainous terrain.
ACTION
Maintain proper inflation pressures between 105~115psi
Reversing the direction of rotation (if the tire is not directional) can extend service life. Consider less aggressive tread patterns in highway operations.
Passenger side tires
11R22.5 A878
16,500Km~19,400Km per mm tread wear
Tire life between: 370,000Km~450,000Km
Joyall Truck Tire Testing Program: Unit # 3083
S.N. TreadDepth
Position Installed Track Date
Mileage Km Trip Air
PressureTread Read Tread Wear Tire
Mileage Project Tire Mileage Total Project
mm Date MileageKm Km Km psi mm mm per
Km/mmSteer
(3.18mm)Drive
(1.59mm)Tire Mileage
Km
11R22.5A878 Drive
21 LFO
10/10/2018
518,009
13/09/2018
592,168 74159 98.00 16.83 4.17 17,774.46 414,002.74 414,002.74
21 LFI 518,009 592,168 74159 98.00 16.98 4.02 18,467.93 430,155.03 430,155.03
21 LRO 518,009 592,168 74159 98.00 16.94 4.06 18,265.76 425,446.16 425,446.16
21 LRI 518,009 592,168 74159 98.00 16.23 4.77 15,532.49 361,782.71 361,782.71
21 RFO 518,009 592,168 74159 98.00 16.80 4.20 17,670.93 411,591.29 411,591.29
21 RFI 518,009 592,168 74159 98.00 16.34 4.66 15,898.79 370,314.50 370,314.50
21 RRO 518,009 592,168 74159 98.00 17.17 3.83 19,362.66 450,995.15 450,995.15
21 RRI 518,009 592,168 74159 98.00 16.53 4.47 16,598.63 386,615.34 386,615.34
Trailer Unit # 527
11R22.5 A8 16PLY
Installation mileage:217,445KmInspection date:13/09/2018Inspection mileage: 226,931Tire rolling trip: 9,486KmTread Wear: 0.86mm
All tires is in excellent conditions at early stage