The 428i GC’s test out sheet says as well as duplicate of the coupe’s. With identical gearing and also using exactly the same staggered 18-inch Bridgestone Potenza S001 run-flat summer tires, this GC to run the 1/4-mile in 14.2 seconds at 98 Miles per hour, just a 10th of a second and 1 Miles per hour behind the coupe. A 162-foot end from seventy mph trim away 2 foot from the coupe’s high performance. Skidpad grip has been the same in 0.89 g.
This cars betray not anymore divergence on the highway. As soon as you’ve picked the sport driving mode to be able to stiffen up a adaptive dampers as part of the $1000 Dynamic Handling package in our test auto, the GC shows the platform’s customary trait: a satisfyingly reliable control of body moves undermined by unexceptional steering sense.
The 3664-pound Gran Coupe weighs in at 135 lbm a lot more than the coupe, adequate to be able to decrease the EPA highway rating from 35 mpg to 34 for the GC. All of us noticed twenty-seven combined.
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