View Full Version : metric or Imperial?

27-02-2016, 04:35
Q. In the game they speak of Horsepower. Is that metric HP or imperial hp?

tnx in advance.

27-02-2016, 05:27
Horsepower is horsepower bud. There's no metric/imperial difference when it comes to engines. (that would be hp vs. kw)

Now there is a difference between bhp (brake horsepower) and whp (wheel horsepower). The difference namely being that wheel horsepower factors in drivetrain loss. It's essentially the same thing as the difference between gross and net. I don't, however believe pcars differentiates between the two, and uses solely bhp in both spec sheets as well as the telemetry screen.

27-02-2016, 05:43
I don't know where you've got that information? but this website tells me something different.


i think it's dutch only but you get the point.

1 hp(imp) = 1.0138696654236328 hp(met)

So for calculation reasons i need to know if the hp in the game is imperial or metric.

27-02-2016, 07:59
In all honesty, I don't think there's going to be a simple answer to this. It really depends on the values that each car manufacturer supplied to SMS and whether they supplied Imperial or Metric HP. I suspect that most, if not all, of them would have supplied Metric HP values.

27-02-2016, 08:48
Thank you for your reply :)

Jussi Viljami Karjalainen
27-02-2016, 12:04
The values in the Car Info screen are just listed values that may or may not actually correspond with the car (like the Aston Rapide having a claimed 560 hp when it only produces 517 hp on the lowest altitude track).

The telemetry HP is imperial horsepower, not the German PS or any of the other variants. You can tell by the relation to the torque. For example when the telemetry shows 673 Nm @ 4655 rpm, which works out to 328.0676 kW, the display says 440 hp, meaning the conversion ratio is about 1.34:1, the ratio between kW and Imperial horsepower.

27-02-2016, 14:34
When in doubt ask Jussi .
I think there should be a " ask Jussi " thread .