At its surprise unveil, Tesla CEO Elon Musk made a lot of wild claims about the company's new Roadster, including a surprising torque figure—10,000 Nm. That's nearly 7400 lb-ft, which would make the Roadster the torquiest production car ever. But, that number is a little misleading.
If you head to , the automaker says that 10,000 Nm figure actually corresponds to wheel torque, which is different than the auto industry's standard measure of engine torque. Jason Fenske over at Engineering Explained breaks down the difference between engine and wheel torque beautifully, and does some math to estimate how much engine torque the Roadster produces.
Watch his video for a more thorough explanation, but Fenske calculates that the Roadster's motor offers around 758 lb-ft of torque and nearly 1000 hp. Hugely impressive numbers by any standard.
To better put wheel torque into context, Fenske also calculates those figures for the Dodge Demon. Wheel torque is influenced by gearing, so in the case of the Demon, you multiply engine torque by gear ratio and final drive. By Fenske's calculation, the Demon offers around 14,000 Nm of wheel torque in first gear.
So, Musk isn't wrong when he says the Roadster offers nearly 7400 lb-ft of torque, but as ever, context is important.