BMW X5: Auxiliary Heater

 Runflat tires

Principle Run-flat tires permit continued driving under restricted conditions even in the event of a complete tire pressure loss. General information The wheels consist of tires that are self-supporting, to a limited degree, and possibly special rims. The reinforcement of the sidewall allows the ti

 Crankcase

As far as the physical appearance and dimensions, the crankcase on the N54 is the same as the N52. The main change is in the materials, the N54 uses an all aluminum alloy crankcase. There is also cast iron cylinder liners similar to the previous M54 engine. The reason for using the all aluminum c