At 65 years old, sometimes I surprise myself. I watched a YouTube 'how to' video, they guy said anyone could do it, so I did. I removed the old, cracked rubber tires and inner tubes and replaced them all. Now my beach cruiser is on the road again. Rides smooth, well made tires. The cost for tires and rubbed was almost as much as I paid for the bike in 2017 ($70 for the bike, $55 for tires and tubes), but a new bike is close to, or over $200. Crazy inflation nowadays. Fix your old bike!