Start of season - May 29th:
Existing Tire rule from 2016..
May 30th - June 30th:
Existing Tire rule from 2016..
No Grooving right rear tire.
July 1st - July 29th:
LM 20s only on RF, LF and LR.
LM 20, 30 or 40 on RR - No Grooving RR.
July 30th and beyond:
LM 20s only on RF, LF and LR.
LM 20, 30 or 40 on RR
No Grooving ANY tire!
Existing Tire rule from 2016..
May 30th - June 30th:
Existing Tire rule from 2016..
No Grooving right rear tire.
July 1st - July 29th:
LM 20s only on RF, LF and LR.
LM 20, 30 or 40 on RR - No Grooving RR.
July 30th and beyond:
LM 20s only on RF, LF and LR.
LM 20, 30 or 40 on RR
No Grooving ANY tire!