In 2016, BMW celebrates its 100th birthday and the M division is apparently planning a special model. A BMW M4 lightweight, think CSL-like, is on the roadmap and for CarSales.au senior BMW M sources have hinted to a vehicle similar to the M3 GTS by bringing more power to the table and dropping some weight.
Same sources have hinted that M is trying to get its manual-only track tear away M4 GTS beneath the 1400kg barrier, although they say it’s a difficult task. The 2014 BMW M4 weighs around 1500 kilograms when using a manual transmission and limited options.
The rumor says that M is planning to extend the M4’s use of carbon fiber from the current roof and boot lid to include the bonnet and the front wings. As we mentioned in previous articles aluminum is also part of the overall weight reduction strategies and in this case the steel doors are being replaced by the lighter metal.
Inside the rear seats are said to be removed completely and the electronically operated front seats replaced with a stiff, light carbon shell covered in thin padding. Just like other special M models, Alcantara will replace leather.
“The E46 M3 was 1495kg and the CSL was 100kg lighter,” one BMW M source pointed out.
“For what we are planning, look more to the M3 GTS than the CSL. We have concepts for a special model and this [the M4] will be the homologation basis.”
But could this mean a new E46 CSL type of vehicle? The sources say that current models are already using many of the techniques used in the iconic E46 CSL.
“It’s difficult for a CSL today. We have already major steps that we would have taken, like thinner glass and lighter seats and lighter wheels and less sound deadening. We’ve already done all of that,” said the source.
“We add weight to the standard car because of the M4’s bigger brakes and stronger suspension and the locking diff, then we try to take it all out again in other areas, which was the CSL philosophy.”