Tire Coefficients of Friction (Mu)

In summary, tire coefficients of friction (Mu) are a measurement of a tire's grip on the road surface, which greatly affects a vehicle's handling and braking performance. This value is typically measured using a dynamometer and can be influenced by factors such as tire type, road conditions, air pressure, and tire tread. It is important to maintain proper tire pressure for optimal Mu and safe driving.
  • #1
stimulisRK
13
0
Do any of you know just a general range of friction coefficients for tires? I'm working out some braking problems, but can't really find anything searching online.
 
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  • #2
If this is for a thought/textbook excericse, you may as well just assume something. 0.9 seems sensible.
Pneumatic tyres are funny things. The friction coefficiecnt changes hugely between different types of tyres, and conditions. Load, tyre pressures, temperatures, surface conditions, tread, all make a large difference.

So either you'll have to be more specific with the conditions of braking, or just assume a figure.
 

Related to Tire Coefficients of Friction (Mu)

What is the significance of tire coefficients of friction (Mu)?

Tire coefficients of friction (Mu) refer to the measurement of the grip or traction that a tire has on the road surface. It is an important factor in determining a vehicle's handling and braking performance.

How is tire coefficient of friction (Mu) measured?

Tire coefficient of friction (Mu) is typically measured using a device called a dynamometer, which applies a force to a stationary tire and measures the resulting frictional force. This measurement is then compared to the weight of the vehicle to determine the Mu value.

What factors affect tire coefficient of friction (Mu)?

The coefficient of friction of a tire is affected by various factors such as the type of tire, road surface conditions, air pressure, and temperature. A tire with a softer compound and a larger contact area will generally have a higher Mu value.

How does tire tread affect coefficient of friction (Mu)?

The tread pattern of a tire plays a significant role in its coefficient of friction. A tire with a deep and aggressive tread pattern will have a higher Mu value, providing better grip on wet or slippery surfaces. On the other hand, a worn-out tire with a smooth tread will have a lower Mu value and may increase the risk of skidding.

Why is it important to maintain proper tire pressure for optimal Mu?

Maintaining the correct tire pressure is crucial for achieving optimal Mu and ensuring safe driving. Under-inflated tires have a smaller contact area, which can decrease the Mu value and reduce traction. Over-inflated tires, on the other hand, have a smaller contact patch, leading to a higher Mu value and reduced handling and braking performance.

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