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I like Jason, but he did a poor job of distinguishing the effects of wheel diameter, wheel aerodynamics, and tire rolling resistance in the comparison of the Tesla range data. He simplified it down to just wheel diameter with the conclusion that more sidewall is critical for range.
It’s obviously more complicated than that. The 18” wheel and tire option for the Model 3 is optimized for range using highly aero efficient wheels and low rolling resistance tires. The larger wheel and tire options are not as focused on range.
Nevertheless, it great to see this kind of analysis presented to his audience.
I like Jason, but he did a poor job of distinguishing the effects of wheel diameter, wheel aerodynamics, and tire rolling resistance in the comparison of the Tesla range data. He simplified it down to just wheel diameter with the conclusion that more sidewall is critical for range.
It’s obviously more complicated than that. The 18” wheel and tire option for the Model 3 is optimized for range using highly aero efficient wheels and low rolling resistance tires. The larger wheel and tire options are not as focused on range.
Nevertheless, it great to see this kind of analysis presented to his audience.
Yeah, I still don't quite understand how 18s (without the aero cover) are more efficient than 19a, and so forth, when they're all the same diameter overall, assuming they all have the same low rolling resistance tires across the board.
Because most of the aerodynamic drag produced by the wheel is ventilation drag. This is where the high pressure air within the wheel well and inside the wheel flows out through openings in the rotating wheel to the low pressure area adjacent to the wheel face.
As the air flows past the wheel spokes it creates drag, and the larger the wheel diameter, the bigger the moment arm of the drag force, due to the longer spokes.
The smaller 18” wheel with aero cover reduces this drag further due to a smoother transition through the wheel which causes less turbulence when this air meets the air flowing across the wheel face.
So theoretically, a mesh wheel versus one with only five spokes, would be more efficient, right? All things being equal like size and tires?
I felt the same way after watching this video - it also wasn't crystal clear to me that the data that Tesla submits to the EPA purely focuses on wheel diameter changes. It's not like the 20" wheels comes with a 20" MXM4. That would be hilarious.I like Jason, but he did a poor job of distinguishing the effects of wheel diameter, wheel aerodynamics, and tire rolling resistance in the comparison of the Tesla range data. He simplified it down to just wheel diameter with the conclusion that more sidewall is critical for range.
It’s obviously more complicated than that. The 18” wheel and tire option for the Model 3 is optimized for range using highly aero efficient wheels and low rolling resistance tires. The larger wheel and tire options are not as focused on range.
Nevertheless, it great to see this kind of analysis presented to his audience.
If you wanna "make a difference," go live among the Hmong in Sapa instead of buying a $50K+ 4,000+ lbs EV with 500+ hp/tq that consumes its own tires for breakfast. ffs
See above post by Clive as to why this is not really true. His resume in this area is professional. So he's not speculating as an amateur. And stickiness per se is not the problem it's probably more trade-offs between rolling resistance/hysteresis, traction, tread compounding , and other tread and belt variables. I suspect you could get a low hysteresis Tire with a super soft tread that would stick like crazy and still get great mileage. But they would wear like Gumball erasersI think the 20-inch track package wheels are worse in range just because the compound of Cup2 is super sticky. 18inch wheels with same width Cup2 will have same range.
Please advise on how you get wheel spin in the model 3 from a standing start?That's pretty much what I tell people when they say it's great for the environment... 'anything I contributed gets taken away with the copious amounts of rubber left at nearly every stop light.'
Frozen lake launch in slip start.Please advise on how you get wheel spin in the model 3 from a standing start?
Please advise on how you get wheel spin in the model 3 from a standing start?
The video didn't mentioned the effect of aero wheel cover for the Model 3 18" wheel?
every single time you launch the car you get wheel spin. How do you think the computer knows how to nerf the power or enable traction control? It’s not magic.
just because you don’t see large clouds of smoke doesn’t mean you’re not spinning.