255 / 245 (Moved)

[acesrt]

Does anyone know of the possible reason for DCX to use
245/45 in front and
255/45 in back
on the SRT with the supercars instead of having a uniform size front and back?


For those who have converted any noticeable difference with

245/45 all around ?
255/45 all around ?

anyone try the 255/45 Eagle RS-A EMT run flats?

[Northern Rider]

It is often done on high performance RWD cars. Called a staggered setup, the wider rear tires give more grip to the rear, especially under acceleration.

[DZeckhausen]

At the limit of handling, the use of a staggered tire set-up also tends to reduce oversteer. This makes the manufacturer's lawyers happier.

It's common for folks who take a street car to the track for road racing or open track days to change from a staggered tire set-up to a uniform setup in order to reduce understeer. For example, many BMW M3 and M5 owners will run at the track with two sets of rear wheels, installed in back and in front.