Topic: Someone please explain the logic of the harness rules to me
"Five- or six-point harnesses mandatory, including fifth or fifth/sixth "anti-submarine" belt. All harnesses must be SFI or FIA approved; dated within four years of the race; and properly mounted. "
Per the SFI and FIA:
SFI approved harnesses are good for 2 years from the date of manufacture.
FIA approved harness are good for 5 years from the date of manufacture(although they're actually stamped with a expiration year).
So why double the SFI lifespan, and reduce the FIA belt lifespan 20%? This makes no sense.