Well, my club allows autocrossing with M90, so Gingerman might also still allow this.
It will likely be outdated next year, but we need to find out for sure. I currently do not have it in my budget to get a new helmet this year.
If I get a chance tomorrow, I'll try to call Bob Gilroy (of Gingerman) at 616-253-4445. They should have the final word on helmet requirements.
