It depends on what you want to do with the horse. Choose the horse for the horse, not it's height.
No, a 17 year and 4 month old individual can not increase in height by 167cm instantly. It takes time and many people have height limits based on their genes; they can only grow to a certain predetermined height.
At the age of 14, regardless of your height of 167cm and weight of 61kg, it is difficult to form a visible 6 pack of abs as your muscles are still growing and forming.
167cm 167cm
167cm p/s: you can view all the riders profile in all three categories in motogp official website.
The average height of a 16 year old girl is 5'3 and the average weight is 55kg
.167 meters
167cm.
5'6 (167cm)
167cm
Sommer Knight is 167cm.
65.7 in ~ 66 inches
5 feet