Reply To: Why Shifters Don't run 6" wheels vs 5" wheels?

[Peter Zambos]

Why the CIK went with 5″ specifically, and not 6″, I don’t know, but I can imagine why having tested them back-to-back. The 5″ wheel, with the taller tire side wall, talks more to the driver and gives feedback before loosing lateral grip. The 6″ will let go without much warning. There are some classes in which the 6″ works well, such as laydowns as dirt ovals, but not with high HP classes, or those that have a very narrow and/or peaky power band.