왜 인치가 낮을수록 연비가 좋고 승차감이 좋아요?
높은인치쓰면 그만큼 원둘레가 넓어지니까 축 한바퀴 회전에 더 많은거리를 가는거 아닌가요?
또 인치가 높으면 더 적은 공기압으로도 한단계 낮은인치의 휠과 동일한 원둘레를 쓰는데 공기압은 적으니까 더 부드럽지 않나요?