What causes tyre squeal?
Discussion
t.benzito said:
do you mean the physics behind it?? I'll have a go - the friction+kinetic energy dissipating into sound energy 
Well I could work that much out myself 
Basically, a car I drive is producing tyre squeal when cornered enthusiastically - but not anywhere near the limits of adhesion - in a not particularly predictable way.
The tyres are all similar, correct pressure etc. And it really isn't anywhere near grip limits, honest...
It's caused by the surface of the tyre moving at a different speed to the road underneath it. The exact nature of the road surface, tyre material, tread pattern and slip will determine how much it squeaks and at which pitch.
If you're getting tyre squeal excessively at normal driving speeds, then either the combination of your tyres and the road surface you're driving on is unfortunate, or your suspension geometry is out.
If you're getting tyre squeal excessively at normal driving speeds, then either the combination of your tyres and the road surface you're driving on is unfortunate, or your suspension geometry is out.
Cheap rubber does that! (ie Lingylongylee-y, Nextaron, etc)
If you mean dynamics wise then its something called slip.
Slip angle.
The tyre is travelling forwards (rotational) and when turning a corner it may end up sliding sideways too (like a tiny drift)
The rubber literally drags itself across the road surface and this dragging motion is called SLIP.
This means the tyre is losing rotation and lateral traction and the subsequent noise made by the dragging rubber is the squealing sound we hear.
If you mean dynamics wise then its something called slip.
Slip angle.
The tyre is travelling forwards (rotational) and when turning a corner it may end up sliding sideways too (like a tiny drift)
The rubber literally drags itself across the road surface and this dragging motion is called SLIP.
This means the tyre is losing rotation and lateral traction and the subsequent noise made by the dragging rubber is the squealing sound we hear.
Pistonwot said:
Cheap rubber does that! (ie Lingylongylee-y, Nextaron, etc)
If you mean dynamics wise then its something called slip.
Slip angle.
The tyre is travelling forwards (rotational) and when turning a corner it may end up sliding sideways too (like a tiny drift)
The rubber literally drags itself across the road surface and this dragging motion is called SLIP.
This means the tyre is losing rotation and lateral traction and the subsequent noise made by the dragging rubber is the squealing sound we hear.
Ok, so cheap rubber will/may make more sound for the same amount of slip? I'm aware it will slip more as well of course...If you mean dynamics wise then its something called slip.
Slip angle.
The tyre is travelling forwards (rotational) and when turning a corner it may end up sliding sideways too (like a tiny drift)
The rubber literally drags itself across the road surface and this dragging motion is called SLIP.
This means the tyre is losing rotation and lateral traction and the subsequent noise made by the dragging rubber is the squealing sound we hear.
Somewhatfoolish said:
This mind sound really stupid but is there anything that could sound like tyre squeal but isn't it?
Old fashoined Mud flaps dragging as the car dips on that side while cornering would do it.Is you car lowered/modified? Wider than standard tyres??
If it is lowered/modified, then the tyres are probably rubbing on the wheel arches or other bits of bodywork.
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