The estate is marginally bigger than the saloon, at 4,702 mm versus 4,686 mm long and 1,457 mm tall compared to 1,442 mm, but other than that they're largely identical in terms of measurements (the estate has slightly
narrower track widths).
Not exact matches
Both the M3 and M4 share the same suspension and
track width, however the standard 3 - series is
narrower than the basic 4 - series and so the saloon's arches have been stretched even further to cover the wider M - car
track.
The
track is also incredibly
narrow, its
width almost equal to the Merc sports saloon's length.
Occasionally the car's sheer
width can make you breathe in a bit on
narrow roads — seriously widened
tracks make the front arches a full 60 mm wider overall than the standard Megane, and the rears 45 mm — but it's arguably worth it for the high - speed stability.
We ran a number of simulations and CFD studies comparing the wide versus
narrow bodies and looked at various
track width options.
The wheelbase is now longer, while the overall
width was made more
narrow to fit the racing tire's
track width.