Question

Suggest a few methods to reduce friction. Why are tyres of vehicles retreaded?​

Answer 1

Answer:

There are several ways to reduce friction:

•The use of bearing surfaces that are themselves sacrificial, such as low shear materials, of which lead/copper journal bearings are an example.

•Replace sliding friction with rolling element friction, such as with the use of rolling

Tires are retreaded more than long haul tires over the life of the tire body. Casings fit for retreading have the old tread buffed away to prepare for retreading. Material cost for a retreaded tire is about 20% that of making a new tire.

Answer 2

Answer:

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