@Brooklyn Corey posted:Please do not glue them. They need to be replaced. They wear out and get loose over time. Some trains come with extra traction tires. If not you can look up what size you need on the MTH website.
This is the correct answer. I never give a thought to putting a traction tire back on if it comes off, it hits the round file. I also never glue them on, that just makes it a Royal PITA to replace them later!