

PREMA PRE-PB-8 Bias Ply Tire Repair Unit, 11-3/4", 6-Ply, Box of 5
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Bias Ply Tire Repair - PREMA PB-8 Heavy-Duty 6-Ply Patches (Box of 5)
Commercial-Grade Agricultural and Industrial Tire Patches
PREMA PB-8 bias ply tire repair patches deliver permanent solutions for major tire damage with 11-3/4 inch coverage and 6-ply construction. These heavy-duty patches handle crown, shoulder, and sidewall injuries on agricultural equipment and commercial truck bias tires.
6-Ply Bias Repair Benefits
Maximum Coverage - The 11-3/4 inch square design repairs injuries up to 2 inches diameter on large commercial tires.
Heavy-Duty Construction - Six reinforced plies match bias tire construction for extreme load capacity.
2-Year Shelf Life - Long storage life ensures patches remain reliable when needed.
Agricultural and Industrial Tire Applications
- Tractor and implement tires.
- Heavy truck bias tires.
- Construction equipment.
- Large trailer tires.
Heavy-Duty Patch Specifications
| Specification | Details |
|---|---|
| Brand | PREMA |
| Model | PB-8 (PRE-PB-8) |
| Dimensions | 11-3/4" x 11-3/4" (298mm x 298mm) |
| Construction | 6-Ply Bias |
| Quantity | 5 patches per box |
| Weight | 3.5 lbs per box |
| Compatibility | Bias-ply tube-type and tubeless tires |
| Shelf Life | 2 years |
Installation Requirements
- Clean and buff injury area thoroughly.
- Apply PREMA Ultra Fast Dry Vulcanizing Cement.
- Fill injury channel completely.
- Apply patch with firm pressure from center outward.
Stock Professional Bias Ply Tire Repair Patches
Keep PB-8 patches ready for major agricultural and commercial repairs.
Order your 5-pack today.
Frequently Asked Questions
What size injury can the 11-3/4 inch PB-8 patch effectively repair?
The PB-8 patch repairs injuries up to 2 inches in diameter when properly installed following manufacturer guidelines. The 11-3/4 inch square size provides at least 4 inches of overlap on all sides, ensuring secure adhesion even on heavily damaged agricultural and industrial bias tires.
Can these 6-ply patches be used on lighter 2-ply or 4-ply bias tires?
Yes, PB-8 patches work on all bias-ply tires regardless of their ply rating. The 6-ply construction provides extra strength that won't harm lighter tires. However, for smaller injuries on light-duty tires, consider using smaller PB-series patches like PB-3 for more economical repairs.
How does the PB-8 compare to smaller bias ply patches in the PREMA line?
The PB-8 at 11-3/4 inches square is designed for major commercial repairs, while PB-3 at 3-3/4 inches handles standard passenger tire injuries. Choose PB-8 for agricultural equipment, heavy trucks, and industrial vehicles where large coverage area and 6-ply strength are essential.
What type of cement should be used with these heavy-duty patches?
PREMA Ultra Fast Dry Vulcanizing Cement is specifically recommended for PB-8 patches to ensure proper chemical bonding and cure time. The large patch size requires complete cement coverage and proper application technique. Always fill the injury channel completely before applying the patch for permanent repairs.
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