Motorcycle Street Tire Size Conversion Chart
|
| Front Tires |
| Metric |
Alpha |
Inch |
| 80/90 |
MH |
2.50/2.75 |
| 90/90 |
MJ90 |
2.75/3.00 |
| 100/90 |
MM90 |
3.25/3.50 |
| 110/90 |
MN90 |
3.75/4.00 |
| 120/80 |
N/A |
4.25/4.50 |
| 120/90 |
MR90 |
4.25/4.50 |
| 130/90 |
MT90 |
5.00/5.10 |
| Rear Tires |
| Metric |
Alpha |
Inch |
| 110/90 |
MP85 |
4.50/4.75 |
| 120/90 |
MR90 |
4.50/4.75 |
| 130/80 |
N/A |
5.00/5.10 |
| 130/90 |
MT90 |
5.00/5.10 |
| 140/80 |
N/A |
5.50/6.00 |
| 140/90 |
MU90 |
5.50/6.00 |
| 150/80 |
MV85 |
6.00/6.25 |
| 150/90 |
MV85 |
6.00/6.25 |
| |
|
Motorcycle Off-Road Tire Size Conversion Chart
|
| Front Tires |
| Metric |
Alpha |
Inch |
| 60/100 |
90/80 |
2.50/2.75 |
| 70/100 |
90/90 |
2.75/3.00 |
| 80/100 |
100/80 |
3.00/3.25 |
| Rear Tires |
| Metric |
Alpha |
Inch |
| 80/100 |
80/90 |
2.50/3.60 |
| 90/100 |
110/90 |
3.60/4.10 |
| 100/100 |
120/80 |
4.00/4.10 |
| 110/100 |
130/80 |
4.00/4.50 |
| 120/100 |
140/80 |
5.00/5.10 |
Motorcycle Speed Ratings
| |
| Speed Symbol |
Max Speed |
Speed Symbol |
Max Speed |
Speed Symbol |
Max Speed |
| J |
62 mph |
K |
68 mph |
L |
75 mph |
| M |
81 mph |
N |
87 mph |
P |
93 mph |
| Q |
99 mph |
R |
106 mph |
S |
112 mph |
| T |
118 mph |
U |
124 mph |
H |
130 mph |
| V |
149 mph |
W |
168 mph |
Y |
186 mph |
Load Indexes (L.I.)
| |
| L.I. |
lbs. |
|
L.I. |
lbs. |
|
L.I. |
lbs. |
| 33 |
254 |
|
49 |
408 |
|
65 |
639 |
| 34 |
260 |
|
50 |
419 |
|
66 |
661 |
| 36 |
276 |
|
52 |
441 |
|
68 |
694 |
| 37 |
282 |
|
53 |
454 |
|
69 |
716 |
| 38 |
291 |
|
54 |
467 |
|
70 |
739 |
| 39 |
300 |
|
55 |
481 |
|
71 |
761 |
| 40 |
309 |
|
56 |
494 |
|
72 |
783 |
| 41 |
320 |
|
57 |
507 |
|
73 |
805 |
| 42 |
331 |
|
58 |
520 |
|
74 |
827 |
| 43 |
342 |
|
59 |
536 |
|
75 |
853 |
| 44 |
353 |
|
60 |
551 |
|
76 |
882 |
| 45 |
364 |
|
61 |
567 |
|
77 |
908 |
| 46 |
375 |
|
62 |
584 |
|
78 |
937 |
| 47 |
386 |
|
63 |
600 |
|
79 |
963 |
| 48 |
397 |
|
64 |
617 |
|
80 |
992 |
Above charts are to be used as a guide only. Always check tire clearances when changing to a wider or taller tire. |
