[4kids3fish]

The right position of the rim is with the thinner part on the discharg side for the air when the wheel is revolving. This should help air to enter into the brakes for cooling purposes.

Interesting. Bazil's car has this orientation (drawing air IN) while the pix of the 348s with chrome wheels show them on backwards (drawing air OUT). :nuts:

I thought that cars generally blew air OUT of the wheel openings, from a high pressure area under the nose/bonnet into a low pressure area beside the guards, but it probably depends a lot on the aerodynamics of each car.

Maybe you'll need to track-test each orientation - which fades first?!!