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Converting Motorcycle Tire Sizing Systems

Converting between sizing systems is no problem! In a few cases, there are tire sizes that exist in one coding scheme but not in another. Beyond those exceptions, however, you can feel free to search for your tire size using the metric, alpha or standard inch systems. You'll normally get the most results using Metric.

On-road Tire Size Conversions:

Front Tires Rear Tires
Metric Alpha Inch Metric Alpha Inch
80/90 MH90 2.50/2.75 110/90 MP85 4.00/4.75
90/90 MJ90 2.75/3.00 120/90 MR90 4.50/4.75
100/90 MM90 3.25/3.50 130/80 N/A 5.00/5.10
110/90 MN90 3.75/4.00 130/90 MT90 5.00/5.10
120/80 N/A 4.25/4.50 140/80 N/A 5.50/6.00
120/90 MR90 4.25/4.50 140/90 MU85/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

Off-road Tire Size Conversions:

Front Tires Rear Tires
Metric Alpha Inch Metric Alpha Inch
60/100 90/80 2.50/2.75 80/100 80/90 2.50/3.60
70/100 90/90 2.75/3.00 90/100 110/90 3.60/4.10
80/100 100/80 3.00/3.25 100/100 120/80 4.00/4.10
110/100 130/80 4.00/4.50
120/100 140/80 5.00/5.10

At this point, you should be more than ready to choose a new set of treads. So check out our huge selection of motorcycle tires! As always, anything over $49 ships for free in Canada. And when your tires arrive, take a look at How to Break In Your Tires Faster, Better and Safer.

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