racers line and ecoline minutia

[PaleMelanesian]

You will lose some speed even rolling straight. You lose even more in a turn thanks to tire scrub, both due to sideways slipping and the non-parallel paths of each turned front wheel and straight rears.

[campisi]

Pet peeve (that diagram reminds me of it): Not a big fan of drivers that, say they are maneuvering that turn in the diagram, slide WAY out left before diving in to the apex without using a blinker. Some will even put their tires in the next lane doing this. Annoying and dangerous. That is all.

[Mustang Dave]

Yes. Keep it between the lines.

[Grant-53]

This is an interesting thread as I spent years studying vehicle dynamics. The eco line combines or balances the minimum distance traveled and the minimum need for applied power. If your alignment is correct and the tires neither are spinning or sliding then scrubbing losses are minimal.

[thomason2wheels]

Arent the tire scrub losses in the corner a function of the g force generated? That is the faster you go the harder the tires have to work to keep on your cornering line? The more energy is wasted in heating the tires....the goal should be to balance conservation of momentum with minimizing tire scrub....conflicting requireme`ts to be sure.