Originally Posted by
culver
50-50 is ideal assuming you have identical tires at all four corners and you are intent on maximizing lateral grip while neither accelerating or braking.
WHere are you getting your information ?
With anti-dive suspension set up then the dynamics are totally different
Wiht active steering geometry, again it altars the mix.
So when you talked about assumptsion you missed 80% of them
If you want to turn corners AND accelerate then you want larger width rears and near 50:50 weight.
WHy ? Because on breaking the weight transfer will let the fronts do most of the retardation. Then on exit the extra rubber makes up for the less than ideal weight balance at that point ( about 60:40 )
AWD cars certainly can have uneven sized tires front and rear however, unless you want to play some tricks with the gearing you want equal diameter front and rear (I assume that is what you meant). Equal width isn't a requirement at all.
Now realised that when you meant different SIZE wheels you were only consindering width As is clear my first reply covered width and diamter.
It's not ideal to have different width on AWD cars either as under braking you get different retardation at front and rear and the transmission has to cope with the torque backlash - this not only risks damage in the drivetrain but it can lead to unexpected handling pitches during braking and acceleration.
Here is a post I wrote on this topic:
Interesting. But seems to isolate the weight and not fully consider the dynamics of the car movement. In particular polar MOMENT is what makes rear/mid engine config "better". How you get 50:50 is critical - weight away fomr the centre is bad As said in my first reply, weight transfer is important in drivng a car fast on varying conditions and cornering. With a near perfect balance the driver has more scope for more adjustment using the brake and throttle. ( Hence why in early 911 if it started to break away at the rear you BETTER keep the throttle down or you just exited backwards - VERY LITTLE driver-options )
"A woman without curves is like a road without bends, you might get to your destination quicker but the ride is boring as hell'