Originally posted by: infestedgh0st
Originally posted by: logic1485
What are they? They're usually found around the 60 km/h mark in older Mercedes Benzes
It is also on older Porsches. It is to tell you how fast your first gear will go up to.
They derived it from launching on an AWD system. When you launch your car from a stop, you cannot tell when to shift by the RPM gauge (since the engine will be redlining and tires will be peeling out). The redline on the speedo is to tell you when to shift (i.e. first gear goes up to 60km/h)