Back in the annals of history I recall that Roadrunners were mainly used on the rear, -still got out there will look in the morning, & TT100 front,and not a cut and dried situ, but I was led to believe that in some cases, a tyre that was designed for one end and used at the other needed to be reversed?? maybe as the rear tyre is generally for drive and the forces work in one rotational direction, and the front is predominantly braking, so the forces work in the other rotational direction??
Could be way off the mark tho', If you have the arrows correct, should be right? but does it feel funny??
cheers