My oldest MTH locomotive, an SD70ACe, is about 10 years old and the traction tires are shot. It didn't come with spares, but I found some in some of my other locomotive boxes. I have a couple of questions:
What's generally accepted to be the best methodology to replace the traction tires on a RailKing SD70ACe? Do you have to remove the motors from the trucks? Or can you get to the truck side screws with the motors in place?
How long is the shelf life on these traction tires? Are the ones that have been sitting around my house for 5-10 years any good still or should I just get new ones?
Thanks in advance.