Tires & Tubes for 2018+ Harley M8 Motorcycles. The 2018+ M8 Tires & Tubes collection at TC Bros offers a range of high-performance options designed to deliver durability, traction, and custom style for Milwaukee-Eight Harley-Davidson motorcycles. Featuring premium tires and inner tubes in various sizes and tread patterns, this collection is tailored to fit models like the Softail Street Bob, Fat Bob, and Low Rider. Whether you're upgrading for better handling or completing your custom chopper build, these products combine reliability with bold aesthetics. TC Bros, founded on a legacy of unique motorcycle craftsmanship, inspires builders to push creative boundaries and create bikes that stand out on every level.