Look at the timestamps; that horse was still alive when I began beating it, I swear!
As to dissimilar tires, I know of no absolute prohibition but... Assuming that a motorcycle's front and rear ends are going the same direction on the same surface at the same time; I would very much prefer that the tires were designed to work together and were made with the same construction methods and of the same rubber compounds.
Different shoes for the left and right foot anyone?
