There is lot more than what is currently discussed for both empty grocery getter mode and as a TV
ALL of the components, sub systems and systems matter and play together
Just take tires, wheels and suspension
Ultra low profile (aspect ratio) to traditional 85 aspect ratio matters and plays with...
PSI you have in them and plays with...
Wheel rim width vs the OEM's recommended rim width vs what you did to re-engineer and plays with...
The wheel offset vs OEM offset and plays with...
The OEM shocks to the aftermarket shocks you put on and plays with...
The suspension layout. Such as Live axle, IDR/IDF, Swing arms, leaf/coil, etc, etc and plays with...
The OEM anti-sway (lean) bars or none to the aftermarket you put on front and no rear, to the rear you put on & didn't increase the front bar's rating, to the other suspension modifications you have made and plays with...
The steering system and the ratio & linear or variable rate & how tight it is and plays with...
The OEM bushings and the aftermarket bushing you installed or not with the aftermarket anti-sway bar(s) and plays with...
Whether empty grocery getter mode to TV to performance level driving and plays with...
The ABS system & braking coefficient of materials (mud hen OEM to track level) you have chosen to install and plays with...
The level of OEM thermal rejection management and the aftermarket stuff you have added or modified yourself and plays with...
The rest of the whole vehicle system, which would be the computer management systems and subsystems that came with your vehicle to the aftermarket stuff you have installed...
It is not as simple as most think and the reason OEMs dial in under-steer for the masses who have no clue, nor care in most cases...but this is a very narrow slice of the masses, so assume knows more...but the comments says closer to the masses...
Edit...should have added the aftermarket OEM/model/etc of those components also matters and plays with...