E-4 (21.00-33)
- 2 sizes
- Bias OTR
E-4 is a bias OTR tyre designed for large self-dumping trucks operating in heavy-duty off-road environments. The tyre features a tread pattern engineered for wear resistance, good grip and self-cleaning performance under high-load conditions. 0 rim. The tread depth is 570 mm across both sizes, providing long casing life in abrasive terrain.
What E-4 Is Built For
E-4 is a bias OTR tyre designed for large self-dumping trucks operating in heavy-duty off-road environments. The tyre features a tread pattern engineered for wear resistance, good grip and self-cleaning performance under high-load conditions. It is available in two sizes: 21.00-33 with ply ratings of 32 and 42, both mounted on a 15.00/3.0 rim. The tread depth is 570 mm across both sizes, providing long casing life in abrasive terrain. The overall diameter ranges from 500 mm to 690 mm, with section widths of 10,300 mm and 12,400 mm respectively. This tyre supports high-load applications at both 10 km/h and 50 km/h speeds, with pressure and load data confirmed per size in the size table.
Manufacturer Feature Claims
- Available for large self-dumping trucks
- Wear resistance, good grip and self-cleaning performance
Key Benefits
- Wear resistance extends casing life in abrasive off-road conditions
- Good grip performance maintains traction on loose or uneven surfaces
- Self-cleaning tread pattern prevents mud and debris buildup under load
- Two ply ratings (32 and 42) allow matching to axle load and duty cycle
- Large section width and diameter support high-load capacity on dump trucks
Problems It Solves
- High wear rates in abrasive off-road terrain leading to frequent casing replacement
- Mud and debris clogging tread grooves reducing grip and increasing rolling resistance
- Inadequate load capacity on low-ply tyres causing early failure under heavy dump truck duty
- Lack of availability of large OTR tyres in standard container sizes for overseas buyers
- Multiple suppliers and paperwork when sourcing different ply ratings and sizes for a single fleet
Who It Is For
- Mining and quarry contractors sourcing OTR tyres for large dump trucks
- Fleet operators managing dump trucks in heavy-duty off-road applications
- Distributors supplying OTR tyres to contractors in Africa, South America, and Southeast Asia
- Government or infrastructure projects requiring bulk OTR tyre supply for dump truck fleets
- Importers needing one supplier for mixed OTR sizes and ply ratings in a single container
Application Scenarios
- Large self-dumping trucks in mining or quarry operations hauling heavy material over unsealed haul roads
- Dump trucks operating in construction sites with soft or muddy ground requiring consistent traction
- Fleets running long-haul dump routes with mixed terrain including gravel, mud and compacted soil
- Operations where tyre casing longevity is critical due to high replacement costs and downtime
- Off-road environments where mud and debris accumulation can reduce grip and cause premature wear
Technical Features
- Bias construction with 32 and 42 ply ratings for high durability under heavy load
- Tread depth of 570 mm across both sizes to support extended casing life
- Section width of 10,300 mm and 12,400 mm to distribute load over larger ground contact area
- Overall diameter of 500 mm and 690 mm to suit large self-dumping truck wheelbases
- Rim size 15.00/3.0 standard for both sizes, ensuring compatibility with large dump truck wheels
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
- For large self-dumping trucks
- Sizes Available
- 21.00-33 (32PR), 21.00-33 (42PR)
- Ply Ratings
- 32, 42
- Rim Size
- 15.00/3.0
- Overall Diameter Range
- 500 to 690 mm
- Tread Depth
- 570 mm
- Max Load at 10km/h
- 1940 kg (32PR), 1940 kg (42PR)
- Max Load at 50km/h
- 42.0 kg (32PR), 42.0 kg (42PR)
- Pressure at 10km/h
- Not specified in size table
- Pressure at 50km/h
- Not specified in size table
- Tread Pattern
- Designed for wear resistance, grip and self-cleaning
All 2 Listed Sizes
| Size | Ply Rating | Rim | 10km/h Max.Load Inflated (kg) Pressure (kPa) | 50km/h Max.Load Inflated (kg) Pressure (kPa) | Section Width (mm) | Overall Diameter (mm) | Tread Depth (mm) | Type TT TL | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 21.00-33 | 32 | 15.00/3.0 | _ | _ | 10300 | 500 | 570 | 1940 | 42.0 | TL |
| 21.00-33 | 42 | 15.00/3.0 | _ | _ | 12400 | 690 | 570 | 1940 | 42.0 | TL |
Materials and Construction
- Bias casing construction as supplied by the manufacturing plant
- Tread compound specified for wear resistance and grip in off-road conditions
- Sidewall and tread structure designed for self-cleaning performance under load
From Size List to Loaded Container
Confirm the required size, ply rating and load application against the dump truck's axle and duty
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 payment
Container is loaded with mixed sizes and patterns if needed, insured and shipped with 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, not passed back to the plant
- Cargo transportation insurance is arranged on every shipment
- All markings and specifications are confirmed against your import market requirement before loading
Customisation Options
- Mixed container loading across sizes and ply ratings to match your order book
- Certificate of origin issued to suit your import duty position
- Label, marking and packaging adjusted to the destination market requirement
- Sidewall branding and private label subject to plant minimum order quantity
Where This Pattern Wins and Where It Does Not
Compared With Radial OTR tyres
Bias construction provides better durability under high-impact off-road conditions but may have higher rolling resistance and shorter highway mileage
Compared With Lower ply rating OTR tyres
The 32 and 42 ply ratings offer higher load capacity and casing life for heavy dump truck duty, but may be heavier and more expensive
Compared With Tyres without self-cleaning tread
The E-4 tread pattern reduces mud buildup, maintaining grip and reducing wear in wet or muddy terrain
Use Guide
- Match ply rating to your actual axle load and duty cycle; do not overspecify to avoid unnecessary cost and ride harshness
- Verify rim size 15.00/3.0 compatibility with your dump truck wheel before ordering
- Inflate to the pressure specified in the size table for your load and speed; underinflation increases wear and heat
- Inspect tread grooves after each off-road cycle for debris buildup to maintain self-cleaning performance
- Rotate positions if irregular wear develops, especially on fleets with one-way loading patterns
E-4 Buying Questions
What is the minimum order quantity?
We load by full container. A 40HQ of 21.00-33 typically fills at container weight rather than volume, so the practical minimum is one container. Mixed loads across sizes and ply ratings 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.
Which sizes and ply ratings are available?
21.00-33 in 32PR and 42PR, both on a 15.00/3.0 rim. Full load and pressure data for each is in the size table.
Is this tyre suitable for dump trucks?
Yes. It is specifically designed for large self-dumping trucks operating in heavy-duty off-road environments.
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.
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Read the guideGet a Price on E-4
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.