@ftauss posted:Is there an easy way to find out what size traction tires you need. The PE Berkshire needed some and the LHS guy had them. But the MPC NW2 needs them replaced as well as the MPC F3. And the Kline Reading 4-6-2 mentioned in another post. I would think there wasn't a huge number of traction tire sizes.
Fra
And this is LIONEL's service parts reference list for traction tires:
Lionel Train Replacement Parts, O Gauge Model Trains from Lionel Trains (lionelsupport.com)