Straight out the box, the BMW 8 Series has serious performance credentials. Even the entry-level model, the diesel 840d, already makes 320 PS. BMW's biggest coupe is no slowpoke, but there's always room for more power, right?

And more power, it gets. The boys from Bavaria have unveiled the M8, the most powerful 8 Series iteration of the big coupe. Not only that, BMW also revealed the open-top version of it as well, making the M8 Coupe and Convertible one of the most powerful two-door grand tourers from Munich.

2019 BMW M8 is a hard-charging, 600 HP grand tourer image

So for those still find the current M850i lacking, the M8 more than makes up for it. It gets an uprated version of the 4.4-liter, twin-turbocharged V8 from the standard 8 Series, and cranked up the power to 600 PS. For comparison basis, the M850i already packs a potent 530 PS. That's a substantial increase of 70 PS.

But if that's still not enough, there's the M8 Competition which comes swinging with 625 PS. Curiously, the M8 has the same torque sum as its more pedestrian counterpart, the M850i, which is at 750 Nm. Like the M5, the M8 sends its power to all four wheels via a sports-tuned xDrive all-wheel drive system. But for those who want to sling the tail out, all-wheel drive can be disengaged to make it rear-wheel drive only.

2019 BMW M8 is a hard-charging, 600 HP grand tourer image

As for the look, the M8 gets a more aggressive design over the regular 8 Series. The grill is of the M double-slat kind and the front bumper gets bigger corner air intakes, along with a deeper apron. At the back, the exhausts are more prominently displayed, showing its unique, quad-pipe arrangement. Its diffuser is also different from the standard 8 Series. One subtle change is the side mirror, which is slimmer on the M8. Competition models, on the other hand, gain more gloss black finishes on the outside, as well as a unique set of lightened multi-spoke alloys exclusive to the most powerful version.

2019 BMW M8 is a hard-charging, 600 HP grand tourer image

Inside, it's largely similar to the 840d and M850i in terms of design and layout. The M8 adds a bit more flair with seats featuring thicker bolsters, as well as a special steering wheel with M Mode ready to be activated at a press of a button. Its gear selector is also unique to the model while the headrests feature an illuminated M8 badge. Last but not least are the seat belts which have a purple, blue, and red combination, the signature colors of the M division.