Avon – Avon Cobra Chrome - Rear - 18 in. Rim, including Cobra Chrome AV92 fitments in 150/70-18 white sidewall, 180/55-18, 180/55ZR18, 200/55R18, 240/40R18, 250/40R18, 260/40VR18 and the massive 280/35R18 and 300/35R18 sizes. Fitting a 280 or 300 section rear changes a motorcycle's whole character, and a poorly matched tire will make it steer like a shopping trolley. The AV92 profile is shaped so these very wide casings still roll into a corner progressively instead of standing the bike up, which is exactly what custom builders and performance bagger owners are looking for. V and W speed ratings across the group suit high-output engines, and the reinforced construction resists squirm when torque arrives suddenly. Tread grooves are cut deep enough to move water away from an enormous contact patch, so wet-weather confidence is not sacrificed for stance. Matched with an Avon AV91 front, the balance feels factory-correct. Radial and bias-belted versions appear side by side, along with listings that differ only by the 1DK marking. That range of sizes is what makes an 18 in. rear conversion rideable day to day.