TIRE CONVERSION TABLES:
 (Road Star OEM in bold-italics)
Thanks to Bob Cody
FRONT TIRES
REAR TIRES
Metric
Alpha
Inch
Metric
Alpha
Inch
80/90 MH90 2.50/2.75 110/90 MP85 4.50/4.75
90/90 MJ90 2.75/3.00 120/90 MR90 4.50/4.75
100/90 MM90 3.25/3.50 130/80
5.00/5.10
110/90 MN90 3.75/4.00 130/90 MT90 5.00/5.10
120/80
4.25/4.50 140/80
5.50/6.00
120/90 MR90 4.25/4.50 140/90 MU90 5.50/6.00
130/90 MT90 5.00/5.10 150/80 MV85 6.00/6.25



150/90 MV85 6.00/6.25



160/80
6.80/7.00



180/55
7.00/7.25



200/60
7.90/8.00



230/50
9.50


TIRE / RIM SIZE TABLES:
Size
Rim
OAW
OAD
120/80V16  2.75  4.7  23.8
130/90H16 3.00 5.0 25.4
130/90V16 3.00 5.2  25.0
500S16 3.00  5.2  26.4
MT90H16 3.00 5.3 25.3
130/90H16 3.00 5.4 25.8
140/90H16 3.50 5.8 25.6
140/80VB16 3.50 5.9 24.8
140/90H16 3.50 6.0 25.8
150/80V16 3.50 6.2 25.4
160/80H16 4.00 6.4 26.1
160/80H16 4.00 6.8 26.1
200/60VB16 5.50 7.9 25.9
120/80V18 2.75  4.8  25.9
120/90V18 2.75 4.8 26.4
120/90H18 2.75  4.8 26.4
130/80V18 3.00 5.2 26.3
130/70VB18 3.50 5.4  25.4
150/70VB18 4.00 5.9  26.2
140/70V18 4.00  6.1  25.7
170/60VB18 4.50 6.9 26.0
180/55VB18 5.50 7.0 26.3
230/50X15  7.0-8.0 9.5  25.3