@YZF Do you have that picture where you compared top speeds of cars in GT6 and GT5 somewhere? The stock cars, I mean. I'm thinking I could run them through my Excel sheet and see what the outcome is.

**Edit:** Found it!

Here's the first car I fed Excel with, the Mercedez-Benz SL55 AMG '02. I zoomed in to the interesting bit, the part from 220 to 370 km/h.

I set the blue air density to 1.225, which is the air density at sea level and 15 °C. Then I set the drag area of the car so that the blue acceleration curve would hit 0 at about 332 km/h (which is the top speed in GT5). The final step was to adjust the red air density, so that the acceleration curve hit 0 at about 362 km/h (top speed in GT6). That gave an air density of 0.9.

Next step: Run some more cars through the Excel sheet and see how they compare.

Last edited: May 13, 2015