After going to hidden valley off street drags (yes in Darwin with stupid 32deg and 98% humidity at 10pm)
I overheard and witnessed people being knocked back due to their helmets not being of the new stranded some go through some didn't as it just come in.
from the hidden valley drag racing association website.
* Motor vehicles: require long trousers, long sleeve shirt or jacket, shoes and socks and an approved helmet. (eg AS/NZS1698 or SA2000, or as shown in the ANDRA Rule Book). NOTE: AS1698 is no longer an approved standard.
Don’t know if this has happened down south, but looks like it time for a new helmet.
By the way i ran a 15.3 @ 90mph in a stock r32 gtst 4 door. with shit track conditions (i.e no grip), with the above conditions.