BFGoodrich ST230 255/70R22.5

BFGoodrich ST230 255/70R22.5 is a hard-working steer/all-position truck tyre built to go the distance on New Zealand highways and regional routes. A stable five-rib pattern with wide circumferential grooves delivers confident wet-road grip, straight-line control and long, even wear, while reinforced shoulders fight kerb scrub. The tough, retread-ready casing with full-width steel belts helps lower cost per kilometre. Reliable braking, surefooted handling and fuel-conscious rolling keep your fleet moving. Fit the BFGoodrich ST230 255/70R22.5 and get it done.

Five-rib steer tread. The ST230’s five-rib, straight-groove steer pattern with a solid centre rib stabilises the contact patch at highway speeds to resist river wear and on-centre wander. Interlocking sipes in the intermediate ribs increase block rigidity under lateral load while generating extra biting edges to evacuate surface water, improving wet-lane tracking and braking on New Zealand chipseal. The optimised footprint pressure distribution reduces shoulder step-down and cupping, delivering even wear, longer service life and predictable maintenance intervals for regional and linehaul fleets.

Robust all-steel casing. A heavy-duty, all-steel casing pairs high-tensile steel belts with a reinforced bead bundle and thick bead apex to deliver excellent steer-axle stiffness, impact resistance and dimensional stability under high loads. A cool-running undertread and low-permeation inner liner help control heat on long gradients, protecting belt edges from oxidation and maintaining carcass integrity for multiple high-quality retreads. The result is dependable uptime, confident handling and a lower total cost per kilometre across mixed regional operations.

Stone ejector grooves. Engineered groove bases with angled walls and integrated ejector ridges minimise stone retention and drilling on coarse chipseal and metal road shoulders, preventing penetrations that can initiate rust jacking or belt-edge separations. By keeping debris from seating in the tread, the ST230 maintains a clean footprint for consistent contact pressure, reduced vibration and preserved casing health, improving retreadability and protecting your investment over extended service cycles.

Shoulder decoupling groove. A circumferential decoupling groove isolates the outer shoulder rib to relieve shear stresses generated during tight urban manoeuvres, roundabouts and docking, where steer tyres typically suffer scrub and heat build-up. This design spreads cornering loads more evenly across the footprint, enhancing scrub resistance, reducing irregular shoulder wear and helping the tyre run cooler at the edges, so more usable tread depth translates into longer, more uniform tyre life.

Low rolling resistance compound. A low-hysteresis tread formulation combines a durable, cut-and-chip resistant polymer network with optimised carbon black/silica dispersion to limit energy losses in the contact patch without compromising wet grip. Reduced rolling resistance lowers fuel consumption in litres per 100 km and cuts heat generation, which in turn mitigates belt-edge thermal fatigue. That balance of efficiency and durability helps the BFGoodrich ST230 255/70R22.5 deliver strong kilometre performance while protecting the casing for successive retreads.