LL66A
- 4 sizes
- Bias OTR
LL66A is a bias OTR tyre designed for loaders operating under seriously tough service conditions in tunnels. The flat and smooth tread pattern enhances puncture resistance to stone, while the construction delivers excellent wear and cut resistance. It is available in four sizes across 14 to 20 ply ratings, with load capacities from 2390 kg to 6900 kg and overall diameters of 215 mm and 315 mm.
What LL66A Is Built For
LL66A is a bias OTR tyre designed for loaders operating under seriously tough service conditions in tunnels. The flat and smooth tread pattern enhances puncture resistance to stone, while the construction delivers excellent wear and cut resistance. It is available in four sizes across 14 to 20 ply ratings, with load capacities from 2390 kg to 6900 kg and overall diameters of 215 mm and 315 mm. The tyre is intended for use on loaders in confined, high-impact environments where durability and resistance to damage are critical.
Manufacturer Feature Claims
- Available for loaders operating under seriously tough service conditions in tunnels
- Excellent wear and cut resistance
- Flat and smooth tread improves the puncture resistance to stone
Key Benefits
- Flat and smooth tread pattern improves resistance to punctures from stone and debris
- Excellent wear and cut resistance for prolonged service in harsh tunnel environments
- Available in four sizes with ply ratings from 14 to 20 to match loader axle and load requirements
- Load capacity up to 6900 kg at 1245 kPa for heavy-duty loader applications
- Overall diameter of 315 mm on 12.00-24 sizes provides stable rolling on uneven tunnel surfaces
Problems It Solves
- Tyres failing prematurely due to stone punctures in tunnel environments with high debris exposure
- Cut and wear damage from sharp rock edges and abrasive surfaces in confined tunnels
- Frequent tyre changes on loaders in hard-to-access tunnel areas increasing downtime
- Mismatched ply rating or load capacity leading to casing failure under heavy load
- Lack of a dedicated tyre pattern for loaders operating in high-impact tunnel service
Who It Is For
- Mining and quarry contractors operating loaders in tunnel environments
- Tunnel construction companies needing durable OTR tyres for confined space operations
- Fleet operators managing loaders in underground or high-impact industrial zones
- Distributors supplying tyres for loaders used in tough service conditions
- Government or infrastructure projects requiring OTR tyres for tunnel maintenance fleets
Application Scenarios
- Loaders operating in underground tunnels with sharp rock edges and frequent stone impact
- Heavy-duty loader work in mining or quarry tunnel sections where casing damage is common
- Tunnel maintenance and material transport in confined spaces with limited clearance
- Loader fleets requiring consistent performance across multiple shifts in high-abrasion conditions
- Operations where tyre replacement frequency must be minimized due to access difficulty
Technical Features
- Bias construction designed for toughness in high-impact, confined environments
- Flat and smooth tread pattern to reduce stone penetration and improve puncture resistance
- Four size options: 7.50-16, 12.00-24 in 14 to 20 ply ratings
- Load capacity up to 6900 kg at 1245 kPa for 12.00-24 20PR size
- Section width ranges from 675 mm to 825 mm, with overall diameter of 215 mm or 315 mm
- Rim sizes of 6.00G and 8.5 for compatibility with loader wheel standards
Size Table and Specification
Manufacturer data for every size in this pattern. Check the standard rim against your wheel and the load against your axle plate before ordering.
- Tyre Type
- Bias OTR Tyre
- Application
- Loaders operating under seriously tough service conditions in tunnels
- Sizes Available
- 7.50-16, 12.00-24
- Ply Ratings
- 14, 16, 18, 20
- Section Width Range
- 675 to 825 mm
- Overall Diameter Range
- 215 to 315 mm
- Rim Sizes
- 6.00G, 8.5
- Max Load Range
- 2390 to 6900 kg
- Max Inflated Pressure
- 1245 kPa
- Tread Type
- TT (Tread Type) - Flat and smooth for stone resistance
- Load Index
- 810 (7.50-16), 1245 (12.00-24)
All 4 Listed Sizes
| Size | Ply Rating | Rim | 10km/h Max.Load Inflated Pressure (kg) (kPa) | Section Width (mm) | Overall Diameter (mm) | Type TT TL | |
|---|---|---|---|---|---|---|---|
| 7.50-16 | 14 | 6.00G | 2390 | 700 | 215 | 810 | TT |
| 12.00-24 | 16 | 8.5 | 6150 | 675 | 315 | 1245 | TT |
| 12.00-24 | 18 | 8.5 | 6500 | 750 | 315 | 1245 | TT |
| 12.00-24 | 20 | 8.5 | 6900 | 825 | 315 | 1245 | TT |
Materials and Construction
- Bias casing construction as supplied by the manufacturing plant
- Tread compound specified for wear and cut resistance in high-abrasion environments
- Sidewall and tread design focused on puncture resistance to stone and debris
From Size List to Loaded Container
Confirm the correct size, ply rating, and load index against your loader’s axle and rim specifications
We quote FOB or CIF based on your load port and confirm current plant availability
Production or stock allocation is confirmed with the plant before deposit is required
Container is loaded, insured, and shipped with certificate of origin and full export documentation
Quality and After Sales
- Every tyre supplied carries a one year warranty against manufacturing defect
- Warranty claims are handled directly by us rather than passed back to the plant
- Cargo transportation insurance is arranged on every shipment
- DOT, ECE, and other markings are confirmed against your market requirement before loading
Customisation Options
- Mixed container loading across sizes, patterns, and brands to match your order book
- Certificate of origin issued to suit your import duty position
- Sidewall branding and private label subject to plant minimum order quantity
- Label, marking, and packaging adjusted to the destination market requirement
Where This Pattern Wins and Where It Does Not
Compared With Radial OTR tyres for loaders
LL66A offers better cut and wear resistance in stone-heavy tunnel environments, though radial tyres may provide better rolling efficiency on paved surfaces
Compared With Standard OTR tyres without flat tread design
The flat and smooth tread of LL66A reduces stone penetration compared to block or lug patterns, improving puncture resistance
Compared With Tyres with lower ply ratings
Higher ply ratings in LL66A (up to 20PR) support heavier loads and better withstand impacts in tunnel service, reducing casing failure
Use Guide
- Match ply rating and load index to your loader’s actual axle load and rim width
- Use the correct inflated pressure from the size table: 1245 kPa for 12.00-24 sizes, 810 kPa for 7.50-16
- Inspect tread and sidewall after each shift in tunnel service for embedded stone or cuts
- Rotate tyres between positions if irregular wear occurs, especially on loaders with uneven load distribution
- Ensure rim width matches the tyre’s recommended rim: 6.00G for 7.50-16, 8.5 for 12.00-24
LL66A Buying Questions
What is the minimum order quantity?
We load by full container. A 40HQ of 12.00-24 sizes typically fills at container weight rather than volume, so the practical minimum is one container. Mixed loads across sizes and patterns are accepted.
What is the lead time?
It depends on whether the size is in stock at the plant or has to be produced. We confirm current availability with the plant at the time of quotation rather than quoting a standard figure.
Which sizes are available?
7.50-16 in 14PR, and 12.00-24 in 16PR, 18PR, and 20PR. Full load index, rim, and pressure data for each is in the size table.
Can you supply DOT or ECE marked tyres?
Marking requirements vary by destination. Tell us the import market and we confirm what marking the plant can supply on that size before you place the order.
What warranty do you give?
One year against manufacturing defect on all tyres we supply, with claims handled by us directly. Cargo transportation insurance is provided on the shipment itself.
Can you ship a mixed container with other patterns?
Yes. Most of our customers load one container across several patterns and sizes, which is the main reason to buy through us rather than from a single plant.
Is this tyre suitable for tunnels?
Yes. LL66A is specifically designed for loaders operating under seriously tough service conditions in tunnels, with flat and smooth tread for improved puncture resistance.
Other Patterns in the Same Category
Where This Tyre Fits and How to Specify It
Construction and Quarry
Site work destroys tyres in ways highway rubber was never designed for: sidewall cuts on rebar and kerb, stones drilling through groove bottoms, and a…
Read the industry guideMining
A mine site measures a tyre in operating hours and tonne kilometres, not in months. What matters is heat build-up on the haul road, cut resistance on the…
Read the industry guideTBR vs TBB Choosing Radial or Bias Truck Tyres
Radial versus bias truck tyres, decided on road surface speed and whether a retread market exists
Read the guideOTR Tyre Codes E L G and What They Mean
What E-3, L-3, L-5 and the rest of the TRA service codes tell you about an OTR tyre
Read the guideHow to Read a Tyre Sidewall Marking
What 315/80R22.5 156/150K actually means, and the three checks to make on a size table before you order
Read the guideGet a Price on LL66A
Send the sizes and quantities you need. We confirm plant availability and quote FOB or CIF against your load port, and it can share a container with any other pattern.