Duro 2.75-18 HF311 4PR Knobby

The Duro HF311 is a knobby motorcycle tyre in size 2.75-18, intended for riders running 18-inch rims on trail, enduro, or dual-sport machines that encounter unpaved and mixed-surface conditions.

Rated at 4 plies, the HF311 provides a practical balance of carcass durability and compliance for off-road use. It is a straightforward, purpose-built option for riders who need a reliable knobby in this fitment.

• Size 2.75-18 for 18-inch rim applications
• 4-ply rating (4PR) for durability on rough terrain
• Knobby tread pattern suited to trail and off-road riding

Check tyre pressure before every ride and inflate to the figure specified in your motorcycle's owner manual — never guess or use a generic value.
Inspect the tyre surface regularly for cuts, sidewall cracking, embedded objects, or unusual bulging; address any damage before riding.
Monitor tread depth; replace the tyre once wear indicators or minimum depth markings are reached.
Have the tyre fitted and the bead seated by a qualified motorcycle tyre technician using appropriate equipment — do not attempt roadside bead seating with flammable accelerants.
Do not exceed the maximum load or speed rating marked on the tyre sidewall.
After fitting, re-check tyre pressure once the tyre has seated fully and again after the first short ride.
Store unused tyres horizontally or hanging vertically in a cool, dry location away from direct sunlight, ozone sources (electric motors, fluorescent lighting), and petroleum products.
When storing the motorcycle for extended periods, use a centre stand or paddock stand to relieve sustained load on one contact patch.