Answer:
Trade depth
Explanation:
Trade depth
Importance of tires inflation - Proper inflation makes the tires more shockproof against bumps, pat holes, etc. it helps to improve the life of tires, improve the mileage by improving fuel.
Importance of trade depth - trade depth is used to maintain the best grip during a ride on a wet road. Good trade pattern help to displace the water when the road comes in contact with the surface
