The spec tire rule for the 2010 4-cycle Speedway Grand Nationals will be ANY MAXXIS.
Don't forget to get your pre-registration in. Kart Numbers are being assigned based on the post date on the envelope. Pre-registration ends on June 12, 2010.
Remember, you'll need to have 3 punches post 2009 GN's to qualify for the 2010 GN's. UPS is hosting 4 opportunities to get them. Check out the Region 3 & 5A page for details.
Also don't forget to read you IKF Tech Manual. You need to come prepared! There are no exceptions.