[ZeGermanHam]

Originally Posted by Elarson

Newer helmet certifications are claimed to be more stringent than the previous ones. The outdated helmet hasn't deteriorated but it hasn't been tested to the new stricter spec.

FWIW,
Eric

This, to me, is the more interesting topic relating to this discussion. I agree that helmets don't typically degrade to any meaningful degree if they are not otherwise damaged during use (there have been studies demonstrating as much with other types of helmets), but the safety certification processes evolve and hopefully become more difficult to pass.

Personally, since I use my auto helmet on the road course, they're typically done by around year 5 for me. The pads get worn out, and they get a little ripe inside...

Don't get me started on harnesses, though... As a HPDE senior instructor, I get frustrated with organizations that won't let you use a slightly out of date 6-point race harness, but are totally okay with stock 3-point belts that have been baking in the sun for 30+ years.