Tesla robo taxi drag?

[Vekke]

I would say the aspect ratio impact is not so huge.

In Europe all tires have the energy efficiency label so it's pretty easy to compare different sizes. Based on my research the sweet spot is around 60%

Higher speed rating means more belts are needed which need to bend during driving. Bending is bad for efficiency...

Same goes for load rating, use lowest load rating tires you can.

My optimal tire size for model y and 3 is 205/60r18. That 215/60r18 is very close to that.

In winter tires continental 225/60r18 is a rolling and 215/55r18 is c rolling. Sizes are pretty close to each other. That is only time I have seen that mark travel so much.

Anyway back to topic.

Some great information and closeup video footage on this video.

https://youtu.be/5jqJM7-tC0k?si=KG_QoqgrKI7-RcgH

[Vekke]

I have been doing some calculations again, this time with hashtag#tesla hashtag#cybercab hashtag#robotaxi wheel and tire sizes. Do they make any sense efficiency side as Tesla have been claiming or is there other reasons to have them in the vehicle and what are possible problems with the selected setup?.

If interested in efficiency and wheels and tires I recommend to take a look.

PS Cybercab will be very efficient beast!

https://www.youtube.com/watch?v=1-LUfOyZtGk

You should take a look both of those studies to understand better what is happening in wheels and tires. Tyre modelling for rolling resistance master`s thesis from Chalmers university written by Bharat Mohan Redrouthu https://lnkd.in/d2E_Qy5a

Guenter Leister presentation concerning W213 e series Mercedes Benz wheels and tires in WLTP cycle: https://lnkd.in/duWMZsYz

[freebeard]

It seems unlikely that they would stagger the wheel/tire sizes for styling reasons (big 'n littles), and then fiddle with the covers to hide it?