You can't go "let's end this" with the wrong answer.
@freeAgent You quote a study for
trucks which I mentioned are operating in different limits than
cars. Not only is the figure you show displaying a small difference, it is a small difference for
trucks. Like differences in tons. So the differences between the SR+ and an LR are relatively that much smaller. Insignificant even.
@Mahamilto Again, this is for vans and pickups that could have loads of the order of
tons, not pounds. The smallest weight they use is 250kg which is like 550 lbs. That's the smallest increment. All other weights are bigger. And the stopping distances measured vary by less than 3 feet across all weights. I mean experimentally speaking, they can't even say the braking distances are different with a straight face. If you cherry pick the longest braking distance from the lightest weight vs the shortest of the 1 ton distances, it would "say" less weight yields
longer braking distance. I mean there is no error bars analysis so it's probably all equal within error bars which suggests the exact opposite i.e. that braking distance is the same. The article rather correlates the center of mass with braking distance which is a weird way to say that when the weight is poorly distributed, you brake more with the front wheels and this is almost enough to bring those non-cars with outside the operating limits of "braking distance is only a function of tires quality i.e. mass independent". The main conclusion that they draw is NOT that mass affects braking distance but rather that weight
position does and only for the heaviest loads. Loads that are about 1/4 the weight of the LR. Arguably, the weight distribution on an SR+ vs LR is different but I can bet you can't measure braking distance differences between the 2.
There is less than 500lbs weight differences between the SR+ and the LR. Yes higher weight means longer braking distance. But within operating limits of the model 3, the weight differences between the SR+ and the LR will not result in measurably different braking distances.