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Firestone OTR Tire Index
Performance Finder | Tire Classifications |   Technical Specifications
Firestone OTR Tires  Underground Mining Tire Classifications (L4 - L5)

Function: Transporting / Haulage

TRA Tread Type Radial Tread Patterns Bias Tread Patterns
L4S Smooth Deep
SGG PTLD
L5 Rock Extra Deep VSDL SDT LD, DL
L5S Smooth Extra Deep VSMS PTLD UMS, STMS, PTLD
L5/
L5S		 Half Extra Deep
DL2, HTLD

 

Characteristics:



Cut Resistance

Wear Resistance

Shock Burst Resistance

 

Tread Classifications

L3 Regular Tread
100% 		L4 Deep Tread
150% 		L5 Extra Deep Tread
250%

 

Tire Size Designation


Regular (SH/SW=0.95) 27.00 Section Width (inches)
R Radial Structure 49 Rim Diameter (inches)
** Star Rating

Wide Base (SH/SW=0.8) 33.25 Section Width (inches)
R Radial Structure 35 Rim Diameter (inches)
** Star Rating

Super Wide Base (SH/SW=0.65) 40/65 Section Width (inches)
R Aspect Ratio 65 Series
39 Rim Diameter (inches)
30PR Ply Rating

 

Sidewall Markings (Off-The-Road Tires)

1. Brand Name

2. Bridgestone's Specification Code

3. Pattern Name

4. Serial Number

5. Size

6. Star Rating, Tubeless or Tubetype