EV tires article: Here’s why electric vehicles need EV-specific tires (by Arstechnica)

[nc10]

Article from a few months ago, but just read it. More detail about EV tire design than I've see before.

https://arstechnica.com/cars/2022/12/heres-why-electric-vehicles-need-ev-specific-tires/

For example....."Rob Williams, Hankook Tire's senior vice president, told us that in very round numbers, powertrain noise accounts for 50 percent of the total noise heard from an ICE vehicle and that road noise from the moving vehicle accounts for 30 percent. On the other hand, Hankook found that an EV's electric motor noise accounts for just 15 percent, while road noise is 40 percent and wind noise from high-speed driving equates to about 30 percent. The major factor in tire noise at speed is the tire's tread pattern. ....
............
Combustion-powered cars have been using active and passive noise cancellation for years, but today, there's much more computer simulation software to work out the design of new and quieter tread patterns over louder ones."

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[COdogman]

Good article. Thanks for sharing!

 

[Riviot]

I'd love to see a study of decibels in Rivians with vs without RUS. Road, speed, wheels/tires, conditions, etc the same. My experience in a loaner without RUS, same wheels/roads, it's way louder.

 

[Franksmartin]

I'd love to see a study of decibels in Rivians with vs without RUS. Road, speed, wheels/tires, conditions, etc the same. My experience in a loaner without RUS, same wheels/roads, it's way louder.

What is RUS?

 

[Riviot]

What is RUS?

Reinforced Underbody Shield

 

[Franksmartin]

Reinforced Underbody Shield

Ha, thanks. I have the “RUS”, I find that in mine most noise comes from directly overhead near where the front edge of the glass roof meets the body.

 

[Riviot]

Ha, thanks. I have the “RUS”, I find that in mine most noise comes from directly overhead near where the front edge of the glass roof meets the body.

If RUS truly abates noise, we could get away with "noisier" tires that last longer and are much cheaper.

 

[iansriv]

Tyres and windshield wipers are something that fascinate me in terms of they have essentially remained the same. Yes, technology has improved on certain aspects but overall it's the same concept and use features. This is a great article. I had not thought about noise with tyres. Thanks for sharing!

 

[Trandall]

I heard the Cybertruck is going to utilize tracks that never need replacing. I'm sure every other OEM will follow suit so tires will be moot by the end of the year. Of coarse GM will proclaim themselves the world leader in tracked vehicles.

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