'15 Mustang GT vs '15 M4

[Soup DeVille]

As aluminum crazy as Ford is going on the F150, it seems like the Mustang might eventually get lighter through that same avenue.

[SVT32V]

It is definitely a derivative of the S-197, but that doesn't mean it isn't vasty different (fox vs sn95).

The fenders are aluminum for weight savings so Ford is trying here.

I doubt the fusion based IRS is much if any heavier than the stick axle, but all the extra air bags and other nonsense will weigh more.

No way the 2015 with the light coyote engine weighs as much as a gt500 with the giant 5.8 with blower/intercooler/huge brakes.

[12,000 RPM]

Everything I've read and seen indicates this car only shares powertrains with S197.

The wheelbase being within like .1" if not identical says otherwise.....

Lot of idiots on Jalop are saying the IRS is where the 200-300lb weight gain came from 

[MrH]

The wheelbase being within like .1" if not identical says otherwise.....

Lot of idiots on Jalop are saying the IRS is where the 200-300lb weight gain came from 

Well, it can be heavier. Between CV joints and suspension components. What's the suspension arrangement like in the rear now?

[MexicoCityM3]

What's the suspension arrangement like in the rear now?

Horse carriage suspension.

[Soup DeVille]

Horse carriage suspension.

Wonderful.

People just don't appreciate floating axles on full elliptic leaf springs these days

[MX793]

The wheelbase being within like .1" if not identical says otherwise.....

Lot of idiots on Jalop are saying the IRS is where the 200-300lb weight gain came from 

The current car's wheelbase is within a fraction of an inch of the 1960s era car.  I guess S197 is derived from the first gen's platform...

IIRC, they completely redesigned the floorpan and the front suspension is significantly different as well.

[MrH]

Horse carriage suspension.

Sounds about right for a Mustang

[MX793]

Maybe the new 'stang is a bit of a porker after all?

http://jalopnik.com/the-2015-ford-mustang-might-have-just-gained-a-whole-fa-1584241975

That weight figure came from someone at Steeda, who later clarified on one of the Mustang forums that the number was an estimate on his (or Steeda's) part based past experience with IRS Mustangs (which were of course heavier because they were adapted to IRS via bolt-in conversion rather than being optimized for it) and general industry trends.