N=87 MPH, 140km/h

P=93 MPH, 150km/h

Q=99 MPH, 160km/h

R=106 MPH, 170km/h

S=112 MPH, 180km/h

T=118 MPH, 190km/h

U=124 MPH, 200km/h

H=130 MPH, 210km/h

V=149 MPH, 240km/h

Z=149 MPH, 240km/h and over

W=168 MPH, 270km/h

Y=186 MPH, 300km/h