Can Some One Explain To Be Low Profile ?

For example normal 100/70 has a side wall of 70 ... normal 90/80 has a side wall of 72 ... what is the side wall side of a low profile 100/70? What is the sizes of low profile tires ??

from YamahaT150.COM / YamahaT135.COM http://ift.tt/1djgnT1
via IFTTT