Hi,
As you propably have noticed I am building my next
fuel sipper and its gonna be bad ass ride.
What I havent yet seen in any tests or talks is that you put spare wheel cover on top of your wheels.
In general the less aerodynamic drag you will have smaller the wheel housing volume is. Easiest way to get most smallest volume is put wheel housings on top of your wheels.
So my plan is to use this kind of housings:
Cut them to correct shape and attach over each wheel.
- Front wheel can still turn without any problems.
- Tire housing volume is minimal, I am shooting for 15-20mm gap to tire
- They could actually look cool and futuristic
- Tire vortices should have minimal effect to aero
Now those wont fit in place on most cars but the A8 has quite big room there specially with smaller diameter tires which was one of the reasons to move 195/65R15 size.