- #1
anthonylewington
- 1
- 1
I'm new to the forum and after some help if anyone can explain. I've read a few articles now, which have stated that the average co-efficient of friction for a tire with tread will be between 0.4 in the wet and 0.7 in the dry. If instead the tire had no tread, the co-efficient of friction will be between 0.1 in the wet, and 0.9 in the dry.
I understand why a bald tire will have a lower co-efficient of friction in the wet, as the water won't be dispersed. However what I don't understand, particularly as the laws of friction state that friction is not normally dependent on the area of contact, why does the co-efficient of friction in the dry increase if there's no tread?
I understand why a bald tire will have a lower co-efficient of friction in the wet, as the water won't be dispersed. However what I don't understand, particularly as the laws of friction state that friction is not normally dependent on the area of contact, why does the co-efficient of friction in the dry increase if there's no tread?