2011 BMW 528i: Tip-in, Illustrated
January 14, 2011
Both Jay and Karl noted the throttle tip-in (the delay between the time you press the accelerator and when the car starts moving) in our long-term 528i. It's just like our 7 Series in that regard, so I brought out the handy-dandy Dynolicious iPhone app to show the BMW's lazy response.
Above is the graph generated by Dynolicious with the 528i in Comfort mode. It's just a short and conservative acceleration run from a red light. In the first half-second or so, the speed and horsepower lines remain almost horizontal. Then, it feels like the car recognizes that you actually want to move forward and it begins applying power as a normal car would.
Below, is the same car in Sport + mode with similar pressure on the accelerator. Note the shorter pause before real acceleration begins and the steeper angle of the horsepower line. I also tried a few runs with the gear selector set in sport mode, but found no appreciable difference between that and normal mode.
In any case, I find throttle tip-in annoying. I don't like when cars second-guess my inputs. Just do what I tell you to do, OK? Sure, we can just select one of the sport modes every time we start up the car, but the more aggressive throttle map makes it ill-suited to bumper-to-bumper traffic. So in my open letter to BMW: Please kill the tip-in, mmmkay? Alrighty then, buh-bye, now.
Mark Takahashi, Associate Editor