2016 Harley-Davidson Fat Boy S Owner's Manual 

Rim Seals. Some Softail motorcycles with Profile laced wheels (wire spoked wheels with smooth round rims) are fitted with a special rim seal, a rim strip and a tubeless tire. An inner tube is not used. These rims are unique and identified by the letters MTM and the word TUBELESS etched into the rim.

Never install a tire with an inner tube on these type wheels. Install a new rim seal and rim strip each time a new tire is mounted on a Profile laced wheel with MTM and TUBELESS markings. Steel­laced rims use an inner tube and rim strip. Tubeless tires fitted with the correct size inner tubes may be used with these wheels.

Install a new inner tube and rim strip each time a tire is installed on a steel­laced wheel.

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