2015 Mustang Ecoboost K/SA?

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Originally Posted by ALMACK

Since that combo seems to have enough power to easily run the index, I would leave the stock front wheel/tire setup alone for now.
Just air them up to 40 psi at the track

Heck, I bet it might run the index with stock rear wheels and a drag radial

The closest I can find is DOT-legal drag radials made in a 275/45R17 size by M&H, Mickey Thompson, Nitto, Toyo, and Hoosier. But they're all 26" tall, which is 1" shorter than the stock tires.

But Hoosier lists the tread width of theirs as 9.2", which is over the 9" maximum width, so I don't think that particular tire would be legal.

M&H and Mickey Thompson make 26" tall DOT-legal radial front-runners for 17" wheels. And it looks like there are numerous street-type 205/55R17 (26" tall) tires available.

I can't find any DOT-legal drag tires for the OEM Performance Package 19" wheels that are not over 9" tread width.

And I haven't looked for 18" tires yet (some people with Performance Package cars run 17" wheels in the rear and 18" wheels in the front, to clear the larger front brakes).