BOLD MAGENTA part numbers are new for 2026 STREET TIRES PARTS-UNLIMITED.COM TIRE & SERVICE | 2026 STREET TIRES 33 TIRE FAILURE HAZARD,WHICH IF NOT AVOIDED, COULD RESULT IN DEATH OR SERIOUS INJURY. SEE PAGE 5 FOR IMPORTANT INFORMATION REGARDING PRODUCT USE. WARNING ROADTEC Z8 INTERACT™ DUAL COMPOUND–SPORT TOURING TIRES •Rear tires feature Metzeler multi-zone compound •The Roadtec Z8 Interact also incorporates three tension zones to provide best in-segment mileage and optimal wet performance throughout the tire’s life thanks to an innovative tread pattern, a widened and more elliptical footprint, and a host of wear-resistant technologies not normally seen in motorcycle tires •O-Spec replacement for BMW K 1600 GT and K 1600 GTL •Everything about the new Roadtec Z8 Interact™ has been designed to put the rider in control; it responds like an extension of the rider’s instincts, creating an invigorating blend of precise riding feel and effortless handling •High-silica compound with nano-particles increases performance and safety in all weather conditions •Profile matched with tread design provides easy handling and reduced push steering for maximum confidence in all maneuvers •A final footprint area 8% wider as compared to its predecessor •O-Spec rears feature a 2-ply carcass for heavy sport-touring bikes •M-Spec rears feature dual-compound construction SIZE LOAD/SPEED INDEX TL/TT PART # FRONT 110/70ZR17 “M Spec” 54W TL 0301-0554 120/70ZR17 “M Spec” (58W) TL 0301-0422 110/80ZR18 “M Spec” (58W) TL 0301-0556 120/70ZR18 “M Spec” (59W) TL 0301-0557 REAR 150/70ZR17 “M Spec” (69W) TL 0302-0924 160/60ZR17 “M Spec” (69W) TL 0302-0926 SIZE LOAD/SPEED INDEX TL/TT PART # REAR (CONT) 170/60ZR17 “M Spec” (72W) TL 0302-0491 180/55ZR17 “M Spec” 73W TL 0302-0812 180/55ZR17 “O Spec” (73W) TL 0302-0690 190/50ZR17 “M Spec” (75W) TL 0302-0957 190/55ZR17 “M Spec” (75W) TL 0302-0693 140/70ZR18 “M Spec” (67W) TL 0302-0918 160/60ZR18 “M Spec” (70W) TL 0302-0927 •Metzeler’s tread pattern reduces front tire land-sea ratio to 11% and the rear tire land-sea ratio to 13% •Strategically placed longitudinal central grooves provide ideal drainage for more than 3/4 of all lean angles in the wet; the remaining tread grooves work to add tread flexibility, extending the footprint for stability in the dry •The updated design of the Roadtec Z8 improves wear regularity, which gives riders the benefit of a consistent riding performance across the tire’s entire life • Blackwall •Tubeless (TL) •W-rated for speeds up to 168 mph or (W)-rated for speeds of 168+ mph Roadtec Z8 Interact™ Front/Rear
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