Larry,
It has been stated to contact Van Butler several times on this matter for any questions or clairifications however I will post some info:
The facts are just about every real fast bike (230's+) at Bonneville with ZR street tires have shredded/chunked drive tires.
If a race car wants to run over 200 mph then they have to run approved racing tires please see section 2.F in the rulebook.
I do not have a problem with killing the tires any longer however we have new people that show up with these fast high HP bikes and want to fulfill their desire to run 200 plus and many of them (accomplished racers in other venues) come to Bonneville and get the rear tire spinning so fast that it chunks and could lead to the tire losing air pressure sending a rider to the hospital or worse.
Some of these racers have hidden this by running back to the pits and placing another rim/tire on before any officials could see the chunking.
Street tires were not made to handle this so we will see what the rules bring in the way of safety and performance, this rule probably affect my team more than most as we have several turbo bikes and aspirated bikes to swap tires on to however if you want to play you have to pay.
Some guy on the other coast has 10 fast race bikes and I have not seen him online complaining about this safety rule, I also do not see any car teams complaining either.
If racers can't afford or don't want to comply with the new SCTA rule then they either can go play in another sandbox or pony up to meet the rules.
(now that should be good for an ignore or two)