Based on input from drivers at the Thunderhill Double Regional in late May plus a 97% yes vote to a survey of 2013 SMT entrants, effective immediately, SFR will be allowing the Toyo RR for SMT for the remainder of this season including the Sonoma Sprints in July. This is the same tire that NASA requires.
The goal is to support SMT drivers with affordable, fun racing and we will monitor the usage of the RR for the remainder of the season to collect information for 2014. Regional SMT entrants may use the Toyo RA1, Hoosier SM6 or Toyo RR, all in 205/50-15.
Cars running at Sonoma who want National points must run Hoosier SM6.
Note the SSM tire has NOT changed and remains only the RA1.