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Infrared Inspection of Tires
Presented by: Ron PredmeskyThermosolutions 02’
Orlando, Fl
Did you know slide - Fuel
Under-inflation is not only the tire’s enemy for durability but is a significant contributor to increased rolling resistance and loss of fuel economy.
Tires under-inflated by 15% will cause fuel penalties of around 2.5% and 30% under-inflation by 5%.
For truck tires, a 10 psi drop in tire pressure will increase tire rolling resistance by 2%.
Did you know slide – tire costs
Tire costs are now the 2nd highest operating cost after fuel.
Running tires at 20% under-inflation can reduce tire life by up to 50% and 30% under-inflation by 55%.
Under-inflation will cause increased tire running temperatures and leads to premature removal on the tire.
Legal and Liability Concerns
Proper tire inflation would save 25,000 lives each year. (NHTSA)
Infrared Inspection
*>134.0°F
*<110.9°F
115.0
120.0
125.0
130.0
Test Parameters
18, 26, 29, 32 psi
No weight added, gross weight max, +400lbs gross weight.
Infrared Inspection Methods
Dynamic – Infrared camera mounted on vehicle. Data collected as vehicle is moving.
Static – Infrared camera off vehicle, data taken while vehicle stopped.
Infrared Camera Set Up
Dynamic
Infrared Camera Set Up
Static
Explorer Set Up
F150 Set Up
F150 (1990)
F150 (1990)
Camera Position- All Vehicles
43 inches back from center of wheel
8 ¾ inches from ground to top of lens
6 inches outside of wheel
Test 1 50MPH (2 hours)
Min Mean Max 102.5 113.7 131.3Min Mean Max 102.5 113.7 131.3
*>143.0°F
*<74.1°F
80.0
90.0
100.0
110.0
120.0
130.0
140.0
Min Mean Max 106.9 119.3 135.4Min Mean Max 106.9 119.3 135.4
*>143.0°F
*<63.7°F
70.0
80.0
90.0
100.0
110.0
120.0
130.0
140.0
Min Mean Max 113.2 127.9 142.7Min Mean Max 113.2 127.9 142.7
*>143.0°F
*<63.7°F
70.0
80.0
90.0
100.0
110.0
120.0
130.0
140.0
Min Mean Max 106.5 119.3 137.5Min Mean Max 106.5 119.3 137.5
*>143.0°F
*<74.1°F
80.0
90.0
100.0
110.0
120.0
130.0
140.0
30 minutes 60 minutes
90 minutes120 minutes
Test 1parked outside (2 hours)
Min Mean Max 100.6 103.4 106.2Min Mean Max 100.6 103.4 106.2
*>120.0°F
*<80.0°F
80.0
85.0
90.0
95.0
100.0
105.0
110.0
115.0
120.0
Min Mean Max 95.2 96.8 98.2Min Mean Max 95.2 96.8 98.2
*>120.0°F
*<80.0°F
80.0
85.0
90.0
95.0
100.0
105.0
110.0
115.0
120.0
Min Mean Max 94.4 95.9 97.3Min Mean Max 94.4 95.9 97.3
*>105.0°F
*<86.7°F
90.0
95.0
100.0
105.0
2.5 hours
Min Mean Max 96.2 98.1 99.8Min Mean Max 96.2 98.1 99.8
*>105.4°F
*<86.7°F
90.0
95.0
100.0
105.0
3 hours
3.5 hours 4 hours
Test 1 Speed increase
161.5
*>164.0°F
*<90.0°F
90.0
100.0
110.0
120.0
130.0
140.0
150.0
160.0
145.7
*>164.0°F
*<90.3°F
100.0
110.0
120.0
130.0
140.0
150.0
160.0
162.4
*>164.0°F
*<90.0°F
90.0
100.0
110.0
120.0
130.0
140.0
150.0
160.0
30 minutes @ 75mph 30 minutes @ 80mph
30 minutes @ 85mph
Test 42 hours @ 50 MPH
Min Mean Max 111.7 120.8 137.7Min Mean Max 111.7 120.8 137.7
*>160.2°F
*<63.6°F
80.0
100.0
120.0
140.0
160.0
Min Mean Max 117.3 126.4 140.3Min Mean Max 117.3 126.4 140.3
*>160.2°F
*<63.6°F
80.0
100.0
120.0
140.0
160.0
Min Mean Max 113.4 123.8 136.1Min Mean Max 113.4 123.8 136.1
*>160.2°F
*<63.6°F
80.0
100.0
120.0
140.0
160.0
Min Mean Max 116.6 128.5 143.4Min Mean Max 116.6 128.5 143.4
*>160.2°F
*<63.6°F
80.0
100.0
120.0
140.0
160.0
30 min 60 min
90 min 120 min
TEST 4parked outside for 2 hours
Min Mean Max 105.3 107.8 111.5Min Mean Max 105.3 107.8 111.5
*>119.9°F
*<96.8°F
100.0
105.0
110.0
115.0 Min Mean Max 100.4 101.6 103.1Min Mean Max 100.4 101.6 103.1
*>108.0°F
*<96.8°F
98.0
100.0
102.0
104.0
106.0
Min Mean Max 99.9 101.0 102.2Min Mean Max 99.9 101.0 102.2
*>108.0°F
*<90.3°F
92.094.096.098.0
100.0102.0104.0106.0
Min Mean Max 101.1 102.4 103.7Min Mean Max 101.1 102.4 103.7
*>108.0°F
*<90.3°F
92.094.096.098.0
100.0102.0104.0106.0
2.5 hours 3 hours
3.5 hours 4 hours
Test 4Speed increases
Min Mean Max 136.7 152.6 172.9Min Mean Max 136.7 152.6 172.9
*>191.3°F
*<103.6°F
110.0120.0130.0140.0150.0160.0170.0180.0190.0
Min Mean Max 133.4 149.1 168.5Min Mean Max 133.4 149.1 168.5
*>191.3°F
*<103.6°F
110.0120.0130.0140.0150.0160.0170.0180.0190.0
Min Mean Max 137.7 155.8 178.5Min Mean Max 137.7 155.8 178.5
*>191.3°F
*<103.6°F
110.0120.0130.0140.0150.0160.0170.0180.0190.0
30 min @ 75 MPH 30 min @ 80 MPH
30 min @ 85 MPH
Brand X P235/75R15
32psi cold/35 psi hot 26psi cold/29 psi hot9/19/00 16:07 9/19/00 16:25103.2 deg F 102.6 deg F
122 deg F 120 deg F155.2 deg F 158 deg F
*>160.6°F
*<103.6°F
110.0
120.0
130.0
140.0
150.0
160.0
PressureTimestampAmbient TempRoad TempPeak Tire Temp
*>160.0°F
*<103.6°F
110.0
120.0
130.0
140.0
150.0
160.0
Brand Y P235/75R15
32psi cold/35 psi hot 26psi cold/29 psi hot9/19/00 12:49 9/19/00 13:09103.1 deg F 104 deg F
138 deg F 139 deg F151.9 deg F 155.6 deg F
*>160.6°F
*<103.6°F
110.0
120.0
130.0
140.0
150.0
160.0
*>160.6°F
*<103.6°F
110.0
120.0
130.0
140.0
150.0
160.0
PressureTimestampAmbient TempRoad TempPeak Tire Temp
Tire Temperature- Cool Down
020406080
100120140160180
10min
15min
20min
25min
30min
35min
40min
45min
50min
55min
60min
65min
Temp
Tim
e
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