Our 428i GC’s test sheet states just like a duplicate of the coupe’s. With similar gearing and using exactly the same staggered 18-inch Bridgestone Potenza S001 run-flat all season tires, the GC run the quarter-mile within 14.2 seconds in 98 Miles per hour, merely a tenth of a 2nd and one Miles per hour behind this coupe. A 162-feet stop coming from 70 mph trims 2 ft from a coupe’s performance. skidpan grip was the same on 0.89 g.
The cars abuse no more difference on the highway. As soon as you have picked a sport driving mode in order to stiffen up the adaptive dampers as part of the $1000 Dynamic Handling package deal on our test vehicle, this GC shows the platform’s customary trait: the satisfyingly strong control of entire body movements undermined by unexceptional steering sense.
This 3664-pound Gran Coupe weighs 135 ?) greater than the coupe, enough to drop the EPA highway rating from thirty-five mile per gallon to thirty-four for the GC. Most of us found twenty-seven combined.