RS3's. Hard them on my octy vrs. Great tyre.

No it's not!

 

10dB is twice as loud (that's the log scale). 3dB requires twice the POWER to generate it.

 

EDIT - 10dB is perceived loudness. 6dB is a doubling of the SPL

 

 

71 is biggerer than 69 therefore noisierer.

 

I knew those 4 years of uni weren't not never wasted

A motorbike on ticker is 79db so thats pretty loud considering you will have 4 producing that level of noise !

 

Confused now.

I thought the talk was of road noise given on some tyre stickers, and noise in cars from 4 tyres.  

Theory not actual measured.

 

I know even 4 noisy tyres fitted sound nothing like someone running a motor bike inside a car.

Or even 4 Motorbikes Ticking Over inside your car.

Edited 7 February, 201511 yr by goneoffSKi

Confused now.

I thought the talk was of road noise given on some tyre stickers, and noise in cars from 4 tyres.  

Theory not actual measured.

 

I know even 4 noisy tyres fitted sound nothing like someone running a motor bike inside a car.

Or even 4 Motorbikes Ticking Over inside your car.

 

any DB measurement is relevant to the noise generated. 

 

 

 

and yes laying down next to the tyre while its going at the designated speed and you at the correct distance that the factory stated db level was it would sound on the same scale as a motorbike ticking over 

Really confused now,

i must go and lay down next to a road and listen to tyres going passed.

Im confused too.

Was wondering about the while noise thing though.

My new tyres are a few DB quieter than the old, but the difference seems massive.

Quieter than the motorbike too. If thats relevant in any way lol.

Haha dont go and lie down on the road it probably won't end well. 

 

What I'm saying is the manufacture has tested the tyre for db level and the db meter / recorder would have been at a certain distance from the wheel and the wheel would have been rotating on a road at a certain speed, if you stick a db meter to a tyre on a stopped car theres a very good chance it won't make any noise at all although you will get surrounding noise reading about 30db.

 

SO depending on what variables they used when testing the db level (and no doubt there is a specific distance speed etc etc ) then thats the same speed you would also have to be going to hear that tyre at the db level they stated . 

 

The db level might be from inside the car or might be from 1ft away whilst traveling at 70mph who knows... (go's looking)

Im confused too.

Was wondering about the while noise thing though.

My new tyres are a few DB quieter than the old, but the difference seems massive.

Quieter than the motorbike too. If thats relevant in any way lol.

 

Log maths are a bit odd

 

Dropping from say 75 to 69db is a much bigger drop than 65 to 59dB

 

So dropping just a couple of dB can make quite a significant difference.

For external noise level, a tyre’s performance is measured in decibels (dB).

The test: a microphone is placed at the edge of a track to measure the sound level as the test vehicle passes at 80 km/h (50 mph). 

External noise is measured in standard conditions (track, speed, temperature).

 

 

http://www.michelin.co.uk/tyres/learn-share/buying-guide/new-tyre-grades

 

 

Here are the increments of what a few db add.

 

 

The tyre label noise rating is a measurement of the external noise emitted by a tyre and is not directly related to "tyre noise" heard inside a car (typically referred to as "road roar". A tyre with a high external noise rating can be better for road roar than a tyre with a low external noise rating.

 

New tyres should not be compared to worn out tyres (common sense?). New tyres are generally quieter than worn tyres. You should notice an improvement when replacing worn out tyres even if the replacements are the same brand/type.

The tyre label noise rating is a measurement of the external noise emitted by a tyre and is not directly related to "tyre noise" heard inside a car (typically referred to as "road roar". A tyre with a high external noise rating can be better for road roar than a tyre with a low external noise rating.

 

New tyres should not be compared to worn out tyres (common sense?). New tyres are generally quieter than worn tyres. You should notice an improvement when replacing worn out tyres even if the replacements are the same brand/type.

 

Good comment i understand that, as the rubber wares away and you get closer to the carcass the noise emitted would be considerably louder than with unto 10mm+ of rubber to resonate the sound.  

Think I'm going to go for the Michelin - Pilot Sport 3

 

 

Keep this updated on how i get on. 

Think I'm going to go for the Michelin - Pilot Sport 3

 

 

Keep this updated on how i get on. 

http://www.camskill.co.uk/m61b0s134p109670/Goodyear_Tyres_Car_Goodyear_Eagle_F1_Asymmetric_2_-_225_40_R18_92Y_XL_FP_TL_Fuel_Eff_%3A_C_Wet_Grip%3A_A_NoiseClass%3A_2_Noise%3A_70dB

+

£10 a corner to fit at your local tyre fitter

I'd not recommend that you get Vredestein Wintrac Xtreme S. Least grippy tyre I have ever used, dry or wet. So much for being a winter tyre. Maybe it's the size, but the Potenzas they replaced were much grippier even on a cold damp road. Sadly I cannot get the Uniroyals in the size I need, unless I fit 18" wheels for 1/3 of the year....