Is this tire picture incorrect on OldMiniBikes?

#2
The first tire is described as a knobby by the manufacturer which is why we have it labeled as such. You are correct in that it does look more like a universal tire. We'll fix the description this week.
 
#3
Thank you for the quick response. So if that is actually a universal tire, that's what I am looking for. Is the outer diameter 3.5" + 3.5" + 6" = 13"?
 
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