The American Le Mans Series has accepted the V8-powered BMW Z4 into its GTE class, thereby breaking its own rules.
The GTE class is supposed to pit production-based sports cars from different manufacturers against one another; cars are adjusted via air restrictors and a few other parameters so that very different cars can compete on an equal footing.
Cars in the GTE class are supposed to be based on cars you could buy off the showroom floor. In the case of BMW’s Z4, this has caused some controversy because the ALMS version uses a V8 which BMW does not offer in its Z4 street-car line.
