xthra tyres
RADIAL OTR TIRE 50/80R57 ** XRB 2 E4 TL
XRB 2 is a 4th generation E4 radial OTR tire pattern developed by XTHRA for application in dumpers and similar equipment.

Application :
Rigid dumpers and similar equipment running at open-pit mining sites.

Characteristics :
Specifically designed to fit 29.00/6.0 rims on older versions of 220 tonne dumpers;
Cut and wear resistance through an opened pattern for optimized heat dissipation;
Centered opened bracket blocks for perfect conformation over irregular roads;
Reinforced shoulders for improved stability and load distribution.

Size Class
| PR
Pattern Load
Index
Speed
Index
TRA
Code
TT
| TL
TD
[mm]
TKPH
[C | S | H]
TMPH
[C | S | H]
50/80R57 ** XRB 2 257 B E4 TL 100 900 | 1,140 | 1,380 617 | 781 | 946
Size Class
| PR
Pattern Load
Index
Speed
Index
50/80R57 ** XRB 2 257 B

TRA
Code
TT
| TL
TD
[mm]
E4 TL 100

TKPH
[C | S | H]
TMPH
[C | S | H]
900 | 1,140 | 1,380 617 | 781 | 946

Std.Rim
[in]
OD
[mm | in]
SW
[mm | in]
Net Weight
[kg | lb]
CBM
[pc]
Qty. /Cntr40'
[pc]
29.00/6.0 3,570 | 141 1,180 | 46 4,500 | 9,921 15.0 4
Std.Rim
[in]
OD
[mm | in]
SW
[mm | in]
29.00/6.0 3,570 | 141 1,180 | 46

Net Weight
[kg | lb]
CBM
[pc]
Qty. /Cntr40'
[pc]
4,500 | 9,921 15.0 4

Speed
[km/h]
Speed
[mi/h]
Max.Load
[kg]
Max.Load
[lb]
Pressure
[kpa]
Pressure
[psi]
Pressure
[bar]
15 9 78,110 172,203 809 117 8.1
20 12 77,380 170,594 795 115 8.0
25 16 76,650 168,984 781 113 7.8
30 19 75,920 167,375 767 111 7.7
35 22 75,190 165,766 753 109 7.5
40 25 74,460 164,156 738 107 7.4
45 28 73,730 162,547 724 105 7.2
50 31 73,000 160,937 710 103 7.1
Speed
[km/h]
Max.Load
[kg]
Pressure
[kpa]
Pressure
[psi]
15 78,110 809 117
20 77,380 795 115
25 76,650 781 113
30 75,920 767 111
35 75,190 753 109
40 74,460 738 107
45 73,730 724 105
50 73,000 710 103

Speed
[mi/h]
Max.Load
[lb]
Pressure
[kpa]
Pressure
[psi]
9 172,203 809 117
12 170,594 795 115
16 168,984 781 113
19 167,375 767 111
22 165,766 753 109
25 164,156 738 107
28 162,547 724 105
31 160,937 710 103

*Specs may change without notice.

OTR tires are an important part on any company's operational budget.
A clear and well defined maintenance program is essential for obtaining the best tire performance.

Herein we make some important reminders concerning tire maintenance:

Inflation Pressure:

  • Under inflation generates heat, leading to early tire failure through tread pattern separation; cable and cord fatigue accelerates leading to internal liner and external sidewall ruptures. Treadwear becomes uneven causing cracks and consequently, infiltration. Rim displacement is also another consequence developing to air leaks on tubeless tires;
  • Over inflation increases mid-pattern ground contact causing uneven pattern wearing process; it reduces tyre capacity to absorb irregular road and impacts against physical obstacles ending to a much exposed pattern center subjected to cuts and sudden rupture. Bead suffers excess pressure increasing localized targetted forces against traction, with a potential risk for permanent damage and burts;

Overload Consequences:

  • Overloading will considerably shorten tire life through heat generation, abnormal tire deflection and cord tension, excessive bead movement; all leading to cracks and ruptures caused by dangerous carcass stress;

Road Maintenance:

  • Road surface is one of the most important factors determining a tire performance. Bumping spots, holes, rocks, debris and all physical obstacles cut, excessively wear and even burst tires. Important attention shall also be paid to cleaning loading and dumping areas, reflecting directly on performance and productivity.

For further information or enquiries, contact us :

Commercial Offices:
529 Chevallum Rd.
QLD 4555, Chevallum, Australia
E-mail. au@xthra.com

202 Urb. Los Incas
Santiago de Surco, Lima, Peru
E-mail. pe@xthra.com

Tenders & Global After-Sales:
Av. Arthur GuimarĂ£es, 260 - Santa Cruz
31150-690 Belo Horizonte, MG, Brazil
E-mail. br@xthra.com

Administration & HR:
3905 Two Exchange Square, Central
Hong Kong
E-mail. hk@xthra.com

Finance:
71 - 75 Shelton Street, Covent Garden
London, United Kingdom
E-mail. uk@xthra.com

For further information or enquiries, contact us :

Commercial Offices:
529 Chevallum Rd.
QLD 4555, Chevallum, Australia
E-mail. au@xthra.com

202 Urb. Los Incas
Santiago de Surco, Lima, Peru
E-mail. pe@xthra.com

Tenders & Global After-Sales:
Av. Arthur GuimarĂ£es, 260 - Santa Cruz
31150-690 Belo Horizonte, MG, Brazil
E-mail. br@xthra.com

Administration & HR:
3905 Two Exchange Square, Central
Hong Kong
E-mail. hk@xthra.com

Finance:
71 - 75 Shelton Street, Covent Garden
London, United Kingdom
E-mail. uk@xthra.com


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