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City1st services
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Tyre Maintenance

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REPAIRS

High quality repairs.

At City 1st, we understand the importance of tyre maintenance to ensure complete tyre reliability and maximum wear.

All tyres, whenever possible, will be repaired using high-quality materials and always by a qualified tyre technician, adhering to British standard BS AU159 Compliance.

We inspect all tyres for any run-flat damage or other faults, with any injuries beyond minor repair, they are sent to a specialist repair partner for a complete vulcanised repair. Before refitting, your tyres are pressure checked to increase the life of your tyre.

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REGROOVING

Extend tyre life

To maximise the life of any commercial truck tyre, City 1st encourage and promote regrooving, always following original tyre manufacturers strict guidelines.

Tyres are recommended to be regrooved at an optimum 3-4mm of remaining tread. By regrooving, tyre life can be extended by approximately 20-25% and rolling resistance is reduced which in turn increases fuel economy. Each worn casing is examined before regrooving, checking for any tyre defects.

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PRESSURE MAINTENANCE

Operating at the right pressure.

Part of any tyre reliability program is ensuring the tyre is operating at the correct pressure.

At City 1st, we will look for any tyres running in a deflated or overinflated condition, with pressures taken when the tyre is cold and not at operating temperature.

UNDERINFLATION

-

Unbalanced wear

-

Higher fuel consumption

-

Risk of compound reversion and

subsequent separation

-

Bead area separations

-

Heavy rim chafing

-

Poor vehicle handling

-

Life reduction between 25%-75%

depending on the severity of

pressure drop

OVERINFLATION

-

Unbalanced wear

-

Reduced penetration and impact

fracture resistances

-

Tendency to heel and toe wear

(Especially on lug type tyres)

-

Increased vehicle damage

-

Higher risk of payload damage.

Poor vehicle handling; especially

rear axle

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TURN ON RIM

Avoid sidewall abrasion.

When we complete inspections, we will look out for tyres with shoulder wear or abrasion caused by sidewall scuffing.

We recommend turning on the rim or repositioning to maximise life. This is when a tyre is demounted and refitted after being turned so that the inner and outer lanes of tread are reversed. We highlight issues to our customers to arrange to have the vehicle alignment checked. Incorrect alignment will affect rolling resistance, fuel economy and tyre wear.

LOAD AND SPEED RATINGS

Understanding load
and speed ratings

  • 31
    109
  • 33
    115
  • 35
    121
  • 37
    128
  • 40
    136
  • 41
    145
  • 42
    150
  • 44
    160
  • 46
    170
  • 47
    175
  • 48
    180
  • 50
    190
  • 51
    195
  • 52
    200
  • 53
    206
  • 54
    212
  • 55
    218
  • 56
    224
  • 57
    230
  • 58
    236
  • 59
    243
  • 60
    250
  • 61
    257
  • 62
    265
  • 63
    272
  • 64
    280
  • 65
    290
  • 66
    300
  • 67
    207
  • 68
    315
  • 69
    325
  • 70
    335
  • 71
    345
  • 72
    355
  • 73
    365
  • 74
    375
  • 75
    387
  • 76
    400
  • 77
    412
  • 78
    425
  • 79
    437
  • 80
    450
  • 81
    462
  • 82
    475
  • 83
    487
  • 84
    500
  • 85
    515
  • 86
    530
  • 87
    545
  • 88
    560
  • 89
    580
  • 90
    600
  • 91
    615
  • 92
    630
  • 93
    650
  • 94
    670
  • 95
    690
  • 96
    710
  • 97
    730
  • 98
    750
  • 99
    775
  • 100
    800
  • 101
    825
  • 102
    850
  • 103
    875
  • 104
    900
  • 105
    925
  • 106
    950
  • 107
    975
  • 108
    1000
  • 109
    1030
  • 110
    1060
  • 111
    1090
  • 112
    1120
  • 113
    1150
  • 114
    1180
  • 115
    1215
  • 116
    1250
  • 117
    1285
  • 118
    1320
  • 119
    1360
  • 120
    1400
  • 121
    1450
  • 122
    1500
  • 123
    1550
  • 124
    1600
  • 125
    1650
  • 126
    1700
  • 127
    1750
  • 128
    1800
  • 129
    1850
  • 130
    1900
  • 131
    1950
  • 132
    2000
  • 133
    2060
  • 134
    2120
  • 135
    2180
  • 136
    2240
  • 137
    2300
  • 138
    2360
  • 139
    2430
  • 140
    2500
  • 141
    2575
  • 142
    2650
  • 143
    2725
  • 144
    2800
  • 145
    2900
  • 146
    3000
  • 147
    3075
  • 148
    3150
  • 149
    3250
  • 150
    3350
  • 151
    3450
  • 152
    3550
  • 153
    3650
  • 154
    3750
  • 155
    3875
  • 156
    4000
  • 157
    4125
  • 158
    4250
  • 159
    4375
  • 160
    4500
  • 161
    4625
  • 162
    4750
  • 163
    4875
  • 164
    5000
  • 165
    5150
  • 166
    5300
  • 167
    5450
  • 168
    5600
  • 169
    5800
  • 170
    6000
E
43
70
F
49
80
G
56
90
J
62
100
K
68
110
L
75
120
M
81
130
N
87
140
P
93
150
Q
99
160
R
105
170
S
112
180

TYRE INFO GUIDE

Tyre marks explained.

These inner related markings are always shown together. They are known as the Load Index and the Speed Rating Symbol, and reference the following information:

Tyre width

Tyre width
315: The width of the Tyre in mm.

Aspect ratio

Aspect ratio
80: The height of the tyre in relation to the width
R: Radial construction

Wheel diameter

Wheel Diameter
22.5: The rim diameter in inches

Load index

156: Load index for Single Fitment
150: Load index for Dual fitment
L: The speed index, for this tyre maximum speed is 120km/Hr