Innovative Cambered Tire Helps Saves Fuel, Boost Handling
 

Innovative Cambered Tire Helps Saves Fuel, Boost Handling - Green Car Reports

I am going to need a good drug induced trip to understand this one...

I understand Kaz w/o tripping tho'.

well if the vehicle has such negative camber it would scrub a lot less and save fuel/drag. But I don't think they mean change your camber on your stock vehicle and add these tires and you improved FE , handling yes IMO .

Also 3 deg is a lot of camber . You start to notice the lean on cars around past 1deg .

Interesting find there Frank.

It doesn't seem all that intuitive, until you think about what actually goes on with a tire while the car's rolling -- and going through turns.

Even if you're not charging a turn, at normal road speeds, you still have weight transfer, and body roll. That changes the position of the tires relative to the road, tilting them away from the ideal almost upright orientation that'll give them a consistant, even contact patch with the road.

After all, it's those dynamic changes -- the forces of the car acting on the suspension and tires, that make for most all of the seemingly counterintuitive suspension setups. If body roll and loading up different corners of the suspension didn't occur going through turns (i.e. ignoring the laws of physics), we wouldn't even have any oddball setups with the weird slants and tilts with camber, caster, toe. We'd just have neutral zeros for all measures, and it'd be ideal at any speed -- just like Unicorns are set up for race day!

That said, I'll reserve judgement on this conical-tire idea yet until I see more information (tests, objective reviews with *tests*, maybe some ... tests) on this one.

Not a new invention just in the works for a couple years. Looking forward to some test results! Excessive Camber may not be good for understeer that Daily Drivers may like but for performance vehicles it could become a common tire.

Yeah, if there are any vehicles out there that spend more time turning than going straight, this might have something...

..Cop cars?

Naaaah, don't think so.

The problem I see is it would depend on suspension geometry .
A vehicle with MacPherson struts the camber stays the same basically with wheel deflection but a vehicle with double A arms camber changes according to depression in that corner .

Drift racing! I actually scrubbed the outside of my front tires :o .

the other way around
 

On strut it doesn't change to much as angle is fixed ,it does go a little more negative with full depression becuase the link points gets shorter .

wishbone/multilink depends on the length of the arms/links , If you notice many newer multi link FWD suspensions if a lot of weight is on rears or car is lowered it goes way negative . It is how the manufacture sets up the suspension, they can get it to stay pretty much same angle throughout its motion .
Either way I don't see this working for the masses .

You are thinking in the reference plane of the vehicle. In the reference plane of the road, the whole vehicle tilts outward, including the tires.

But with modern stiff springs, the vehicle doesn't really tilt that much.

Yes, I probably should not of made such general statement .
What I really was trying to convey is vast array of suspension designs and many now don't even have adjustable camber (without some kind of 3rd party adjuster (balljoint/arms)}