Fisker Ocean rated for 18,33kWh/100 km, Tires noise rated at 69 decibels.

TT97 said:

If you are rating tyre (tire) noise, you can't do it from inside a vehicle as the noise from the tire will be very different inside a Honda compared to inside a Rolls Royce. Tire noise makes much more of a difference for EVs as there is no ICE drowning out the tire noise. Tire and wind are the two most prevalent noises for EVs.

As far as testing procedure, Google is your friend (or DuckDuckGo for anyone off the grid):

EU Tire Label Current status and challenges - Tyre Reviews and Tests

Since the introduction of mandatory EU tyre labels in 2012, all tyres have to carry a label informing the consumers how well the tyre performs based on 3 key performance criteria. Prior to the EU ...

www.tyrereviews.com

Click to expand...

Thats some good info on the procedure. Of course the surface would have to be seriously taken into account, I mean some serous db abatement could happen with a newly paved road.

Still they don’t disclose which weighting is used…. Betcha A weighted for better numbers. All pertinent measuring info as well as road smoothness (in measurable standards) needs to be accounted for, to get real results across the board. But this is way down the list of things that are actually important….right? How sturdy the taco tray is way more important to me. ….

Deafsoundguy said:

How sturdy the taco tray is way more important to me. ….

Click to expand...

Which European agency handles taco trays?

Deafsoundguy said:

Thats some good info on the procedure. Of course the surface would have to be seriously taken into account, I mean some serous db abatement could happen with a newly paved road.

Still they don’t disclose which weighting is used…. Betcha A weighted for better numbers. All pertinent measuring info as well as road smoothness (in measurable standards) needs to be accounted for, to get real results across the board. But this is way down the list of things that are actually important….right? How sturdy the taco tray is way more important to me. ….

Click to expand...

It's clear that the road surface has a huge impact on the noise in the car - much more than there will be between different tyre brands/models, so this measurement is clearly to be taken with a very large pinch of salt.

However, as long as all tyres are measured under the same conditions then it gives you a relative idea to compare with. For any given road surface and vehicle then a quieter rated tyre should be quieter - whether it is significant or not is another factor. It's a bit like WLTP - doesn't mean much in itself but allows some comparison between products.

I do factor tyre noise rating into my decision making on choice of tyres, but grip and lifetime are more important factors (for me).

Regardless, 69dB is a class leading noise figure for Ocean sized tyres.