Motorcycle Helmet OK for Crash Helmet @ Track?

If anything most decent motorcycle helmets are way more than good enough for car stuff. Think about it, on a bike you ARE hitting your head on the GROUND if you wreck. They are generally approved beyond whatever a track needs. Most tracks even let you run dirtbike helmets but check with your track beforehand!

A motorcycle helmet IS a crash helmet!!!!

If you run at a NHRA track, you'll need a helmet that meets these requirements.

" 13.99 and quicker must have Snell 95, K98, 2000, SFI 31.1A ,31.2A, 41.1A, or 41.2A helmet. "

EDIT: Found a little info on the difference between the helmets meant for car racing use versus regular motorcycle helmets.

"What are the differences between the SA, M and K standards?
SA Standard was designed for auto racing while M Standard was for motorcycling and other motorsports. There are three major differences between them:
SA standard requires flammability test while the M standard does not;
SA standard allows narrower visual field than M standard (Some SA helmets may not be street legal);
SA standard has rollbar impact test while M standard does not.
The K standards are very similar to the SA standards, however the K standards omit the requirements for flame retardency."

Keep an eye on Ebay. I stole a brand new Snell approved HJC helmet for $21 a few months back. It wasn't the color I wanted but some sanding, paint and clearcoat and it is fine.

I wear my full face dirtbike helmet at MIR. Never had a problem with tech.

I wear a 4 wheeler helmut, I have like 20 mid 13 sec passes using this helmut and no one has ever said anything to me.