Warren D. is my co-pilot
+1 YOU ARE CORRECT, SIR! That's an important point.The Shinko 005 has a W speed rating. Correct me if I'm wrong, but does not the busa require a tire that has a Z speed rating?
The speed rating SHOULD be a "Z", if you are going to get up to speeds the 'Busa is capable of.
I saw that the wheel required no weight to come into static balance.
Is the wheel in alignment? Double-check the balance? Check run-out?