ILMU TAYAR
Huruf terakhir – Contoh : H adalah had maksimum kelajuan 210 KM/JAM ( Jangan main tekan pedal ikut suka ya! ) Jika ianya huruf terakhir seperti di bawah, ia membawa maksud : i. S = Maksimum had laju 180 KM/JAM ii. T = Maksimum had laju 190 KM/JAM iii. U = Maksimum had laju 200 KM/JAM iv. V = Maksimum had laju 240 KM/JAM v. Z = Melebihi had laju 240 KM/JAM vi. W = Maksimum had laju 270 KM/JAM vii. Y = Maksimum had laju 300 KM/JAM viii. ZR = Melebihi 270 KM/JAM keatas Check tayar masing-masing cepat. Ini main hentam saja, apa huruf pun 260 KM/JAM dia tekan. Tapi ingat, walaupun pakai tayar huruf ZR, maximum kelajuan di jalan kita di Malaysia adalah 120 KM/J saja.