http://www.hoseheadforums.com/forum.cfm?ThreadID=84205

New USAC Sprint Car spec tire.

Officials of the United States Auto Club (USAC) and the Midwest Sprint Car Series (MSCS), along with the seven Indiana Sprint Week tracks, jointly announced today the introduction on a new primary Sprint Car spec tire for racing throughout the series and Indiana.

The Hoosier 105/16-15 MED was chosen as the exclusive sprint car tire for non-wing sprint car racing after careful consideration of any cost impacts on race teams. The decision was based on no impact on current wheel sizes, the ability to reverse tire direction for sustained life, and a locked in 2014 price point below what 2013 market pricing was for the 104/17-15 DT-3.

Effective May 1st for USAC events, and June 2nd for all MSCS and member track events, the only tire allowed in competition will be the Hoosier 105/16-15 MED. For races prior to those dates, teams will be allowed to use their current inventory of Hoosier 104/17-15 DT-3 or Hoosier 105/18-15 HT2 along with the new Hoosier 105/16-15 MED. This will allow team's sufficient time to utilize any existing tire inventory. Organizations and tracks requiring this change with today's announcement include:

USAC AMSOIL National Sprint Car Series
USAC CRA Sprint Car Series
MSCS Sprint Cars
Bloomington Speedway
Gas City I-69 Speedway
Kokomo Speedway
Lawrenceburg Speedway
Lincoln Park Speedway
Terre Haute Action Track
Tri-State Speedway

The new spec tire decision was driven by the common use of the tire in sprint car racing throughout the United States, including other popular sprint car series (see list below).

HOOSIER 105/16-15 MED REQUIRED SPEC TIRE - CURRENT
USAC Southwest Sprint Series and West Coast Sprint Series
ASCS (American Sprint Car Series - All Divisions)
USCS (United Sprint Car Series)
SOD (Sprints on Dirt)
Attica, OH and Fremont, OH weekly 410 sprints and 305's.
Knoxville, IA - weekly 360's and 305's.
UMSS (Upper Midwest Sprint Series)
NCRA (National Championship Racing Association)
MOWA (Midwest Open Wheel Association)

The following run the 105/16-15 as an option tire:
World of Outlaws
All Star Circuit of Champions
IRA (Interstate Racing Association)
NOSA (Northern Outlaw Sprint Association)
OVSCA (Ohio Valley Sprint Car Association)

Actually MOWA is an option tire for the Medium. See from their rule book below. I guess it is good they all got together to be on the same tire. If anyone has any tires left over go over and run a BOSS race where you can run anything.

l. Tires
I. Hoosiers must be run on all 4 corners
II. Front
i. 85/8.0-*‐15 D12, D15, D20
III. Left Rear
i. 15.0/90-*‐15 H12
ii. 15.0/92-*‐15 H12, H15
iii. 15.0/94-*‐15 H12, H15
iv. 15.0/96-*‐15 H12, H15
IV. Right Rear
i. 105/16.0-*‐15 H15, H20, Medium

Locked in price point?

How much?

Locked in price for you and me or for them?

Was anyone buying DT-3s in 2013? The market price could've been $500 each for all I know. But the 16" tire is a pretty good tire.

The good thing is at least you get to use what you have left from last year.As for the people who want narrower tires, RR just lost 2 inches of tread width. It would be nice to see that in 2015 the tires would be 14 inches. It would be a lot easier on race tracks, and make it a lot more of a drivers game then.

if they went to 14 inch tires I am sure you would sponsor rr wheels.

The Medium tires are supposed to be $198 and hopefully left rears will be the same instead of more.