(Rear) Tire Size - Bias / Radial - Load Index - Speed Rating
110/80-18 - Bias Ply - S - 58
120/80-18 - Bias Ply - S - 62
130/80-17 - Bias Ply - 65 - R
130/80-18 - Bias Ply - S - 66
140/80-17 - Bias Ply - 69 - R
150/70-17 - Radial - 69 - R
150/70-18 - Bias Ply - R - 70
170/60-17 - Radial - 72 - R