The difference between Code 88 & Code 110 wheels
This is one of those questions we get from time to time. Many new modelers think that wheel code refers to the track code that the wheels are made to run on. This is incorrect. The term Code 110 and Code 88 relates to the width of the wheels and has no relationship to track code (see photos). Code 110 wheels are ”standard” width wheels and will run on Code 100, Code 88, & Code 70 track. Code 88 wheels are “semi-scale” width wheels and will run on Code 100, Code 88, & Code 70 track. Code 88 “semi-scale” wheels are used when the modeler wants a more prototypical-looking wheel width. Actual HO-Scale prototypical wheel width would be around .067” wide, and although they will run OK on the average track, they will not go through common turnouts and crossings. Code 88 (.088”) is just about the minimum width of wheel that will run on most standard or common track if gauged correctly. It is really a matter of appea
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