I think Sam is probably talking about the 17 inch dragster tires. Although I think several fast bikes have used LSR and frontrunners as rear tires. Joe Amo used one on his bike I think.
When Sparky was making wheels he discovered that they had a motorcycle bead, not an automotive bead... something that none of the tire makers either knew or would share.
They are a made for racing tire, therefore not subject to the age rules the bikes have to follow when using DOT tires.
Jeff, there are a lot of cars running frontrunners on all four and they have exceeded 250 MPH...
The car rules won't let you use the skinny 17 as a drive tire... but there's a lot of them on fronts.
So Sam, hopefully you will ask the SCTA for clarification and get a list to share with us