[ianacole]

Originally Posted by JayG

do not buy a 2005 helmet, most clubs will not accept it any longer. June 30 was the cutoff

Most clubs require it to be no older than 1 approval than current. As 2015 is the newest,, the next older one is 2010, so 2005 would not be allowed.

Also many do not allow M, they require SA or SAH

YMMV

From current Solo rules (but definitely check who you run with as they may have supplemental rules):

Originally Posted by SCCA

4.3.1 Helmets
Helmets meeting the following standards must be worn while on course:
All helmets meeting the latest or two immediately preceding Snell Foundation
standards (SA2015, SA2010, SAH2010, SA2005, SA2000, M2015, M2010,
M2005, M2000, K2015, K2010, K2005, K98); SFI standards 31.1, 41.1, 31.1A,
31.2A, 41.1A, 41.2A; ECE R22.05; FIA standards 8859-2015, 8860-2010, 8860-
2004; or British spec BS6658-85 type A are acceptable