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Technical Bulletin - 2015 Mustang Track Width

Effective 4/9/2015
Expires upon 2016 rules release

The 2015 Mustang track width limits have been temporarily changed to 75.250" on the front and 76.250" on the rear.

Note: These limits are based around off the shelf after market wheels and 275 toyo RRs, ie FRPP 18x9.5 ET40, Enkie 18x9.5 ET38 and ET45. These limits may be reduced in the 2016 rules as to keep the track width to a minimum so we would not recommend high dollar custom wheels at the limit of track width rather off the shelf wheels with spacers as the spacers can be removed if needed. Fenders/lips must remain OEM unmodified ie no fender flares with this extra allowance. Rolling of any inner fender lip is permitted.