Motorcycle Tire Size Conversion, Speed Ratings, Load Ratings Chart

Motorcycle Tire Information

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Motorcycle Tire Speed Ratings, Load Ratings and Motorcycle Tire Size Designations

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		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

TIRE Speed Rating Chart
Motorcycle Tire Speed Ratings	Maximum Design/Test Speed
	J Type	62	100
	N Type	87	140
	P Type	94	150
	S Type	112	180
	H Type	130	210
	V Type	149	240
	Z Type	149+	240+
	Tires with 2.00, 2.25 & 2.50 nominal section widths are rated for 75 mph.

How to Read Tire Size Labels

The load rating corresponds to the total load carrying capacity of the tire at the speed indicated by the speed symbol. The Aspect Ratio equals the height divided by the width times 100.

STREET TIRE SIZE DESIGNATION

METRIC DESIGNATION

INCH DESIGNATION

ALPHABETICAL DESIGNATION

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