Understanding motorcycle tire sizes is key to performance and safety. Though the markings may look complex, our motorcycle tire size chart simplifies them, helping you:
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Identify your bike's current tire size specifications and how to read it.
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Find suitable alternative tire sizes based on rim fitment or brand specifications.
This guide will help you decode tire markings, understand different sizing formats (metric, alpha, and inch), and choose the best tires for your ride. Let’s dive in!
Motorcycle Tire Size Lookup & Conversion Chart
To most people, the numbers and letters on the side of their tires are cryptic and indecipherable. These motorcycle tire size comparison charts below will help you understand the codes on the side of your tires to be sure you know which tires you are currently using, and which others will fit your motorcycle.
HOW TO READ MOTORCYCLE TIRE SIZES?
Effortlessly learn how to read motorcycle tire sizes. Our motorcycle tire size guide will help you decode size markings and ensure your bike is equipped with the right tires for a safe and smooth ride.
Typical Tire Markings
B- Aspect Ratio. The smaller the number the lower profile of the tire. In metric this is a ratio between height and width. ex. A 170/80 means the width is 170mm, and the height would be 80% of that. )
C- Rim diameter
D- Load capacity
E- Tire speed rating (ex. S=112mph, H=130mph, V=149mph, W=168mph)
F- Tubeless (TL) or Tube Type (TT) tire.
Decoding Motorcycle Tire Designation Formats
Understanding tire sizes becomes easier when you know the different designation formats. Size may be indicated in inches, metric, or by letters (alpha). It is helpful to know how these compare with each other so you can compare different brands of tires and see which might be the best fit for your bike. This chart shows the approximate comparison of the different size indicators.
METRIC TIRE DESIGNATIONS & SPEED RATINGS
These are commonly seen on tire sides, such as "130/90 - 16 67 H". Each part of the code provides specific information about the tire's dimensions and capabilities.
- 130: refers to the tire width (millimeters)
- 90: Aspect ratio (percentage)
- 16: Rim diameter (16 inch tall)
- 67: Load bearing capacity
- H: Speed rating
Refer to the chart below to understand tire speed ratings, ensuring your tires are appropriate for your vehicle's performance and safety requirements.
|
TABLE OF SPEED RATINGS |
|
|
Speed Ratings (Letters) |
Maximum Speed (mph) |
|
J |
62 |
|
K |
68 |
|
L |
75 |
|
M |
81 |
|
N |
87 |
|
P |
93 |
|
Q |
99 |
|
R |
106 |
|
S |
112 |
|
T |
118 |
|
U |
124 |
|
H |
130 |
|
V |
149 |
|
W |
168 |
|
Y |
186 |
ALPHABETICAL DESIGNATION
This format, like "MT 90 - 16 Load Range B", uses letters and numbers to indicate the tire's specifications, including its load rating and motorcycle code.
- M: Motorcycle Code
- T: Tire Width Code
- 90: Aspect Ratio (percentage)
- 16: Rim Diameter (inches)
- Load range B: Load rating
INCH DESIGNATION
An example like "5.00 H 16 4PR" shows the tire's section width, speed rating, rim diameter, and casing strength in inches.
- 5.00: Section Width
- H: Speed Rating
- 16: Rim Diameter (Inches)
- 4PR: Casing Strength (ply rating)
Explaining Motorcycle Tire Sizes
Motorcycle Tire & Rim Fitment Chart
This tire size chart provides a quick and clear reference for compatible options, helping you easily find the best fit for your motorcycle.
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MOTORCYCLE TIRE & RIM FITMENT CHART |
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|
FRONT |
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|
16" |
17" |
18" |
19" |
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|
Tire Size |
Rim (inch) |
Tire Size |
Rim (inch) |
Tire Size |
Rim (inch) |
Tire Size |
Rim (inch) |
|
110/90-16 |
2.15 - 3.00 |
110/70-17 |
3.00 - 3.50 |
100/90-18 |
2.15 - 2.75 |
90/90-19 |
1.85 - 2.50 |
|
120/80-16 |
2.50 - 3.00 |
110/80-17 |
2.15 - 3.00 |
110/80-18 |
2.15 - 3.00 |
100/90-19 |
2.15 - 2.75 |
|
130/70-16 |
3.50 - 4.00 |
120/60-17 |
3.50 - 3.75 |
110/90-18 |
2.15 - 3.00 |
110/90-19 |
2.15 - 3.00 |
|
130/90-16 |
2.50 - 3.50 |
120/70-17 |
2.75 - 3.75 |
120/70-18 |
3.00 - 3.75 |
120/70-19 |
3.00 - 3.75 |
|
150/80-16 |
3.00 - 4.00 |
120/80-17 |
2.50 - 3.00 |
120/90-18 |
2.50 - 3.00 |
130/60-19 |
3.00 - 4.00 |
|
120/90-17 |
2.50 - 3.00 |
130/60-18 |
3.50 - 4.00 |
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|
130/70-17 |
3.50 - 4.00 |
130/70-18 |
3.00 - 4.00 |
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|
130/80-17 |
2.50 - 3.50 |
140/70-18 |
3.50 - 4.50 |
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|
140/75-17 |
3.50-4.25 |
160/60-18 |
4.25 - 5.00 |
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|
140/80-17 |
2.75-3.75 |
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|
150/80-17 |
3.50 - 4.25 |
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|
20" |
21" |
23" |
26" |
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|
120/70-20 |
3.5 |
80/90-21 |
1.60 - 2.15 |
120/70-23 |
3.50 - 4.00 |
120/50-26 |
3.50-3.75 |
|
140/60-20 |
3.75 |
90/90-21 |
1.85 - 2.50 |
130/50-23 |
3.00 - 4.00 |
120/55-26 |
3.50-3.75 |
|
150/55-20 |
4.5 |
120/70-21 |
2.75 - 3.75 |
130/60-23 |
3.00 - 3.75 |
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|
130/60-21 |
3.00 - 4.00 |
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|
140/70-21 |
3.00 - 3.75 |
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|
24" |
30" |
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|
130/70-24 |
4 |
140/40-30 |
4 |
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|
REAR |
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|
15" |
16" |
17" |
17" |
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|
Tire Size |
Rim (inch) |
Tire Size |
Rim (inch) |
Tire Size |
Rim (inch) |
Tire Size |
Rim (inch) |
|
130/90-15 |
2.50 - 3.50 |
130/90-16 |
2.50 - 3.50 |
120/90-17 |
2.50 - 3.00 |
180/60-17" |
5.00 - 5.50 |
|
140/80-15 |
2.75 - 3.75 |
140/90-16 |
2.75 - 3.75 |
130/90-17 |
2.50 - 3.50 |
190/50-17 |
5.50 - 6.00 |
|
140/90-15 |
2.75 - 3.75 |
150/80-16 |
3.00 - 4.25 |
140/70-17 |
3.50 - 4.50 |
190/55-17 |
6.00 - 6.00 |
|
150/90-15 |
3.00 - 4.25 |
160/80-16 |
3.50 - 4.50 |
140/80-17 |
2.75 - 3.75 |
190/60-17 |
5.00 - 6.00 |
|
160/80-15 |
3.00 - 4.50 |
170/70-16 |
4.00 -5.50 |
150/60-17 |
4.00 - 4.50 |
200/50-17 |
6.00 - 6.50 |
|
170/80-15 |
3.50 - 4.50 |
180/60-16 |
5.00 - 5.50 |
150/70-17 |
3.50 - 4.50 |
200/55-17 |
6.00 - 6.50 |
|
180/70-15 |
4.25 - 5.50 |
180/65-16 |
4.25 - 5.50 |
160/60-17 |
4.25 - 5.00 |
210/50-17 |
6.25 - 7.00 |
|
200/70-15 |
4.50 - 6.25 |
180/70-16 |
5.00 - 5.50 |
160/70-17 |
3.75 - 5.00 |
240/45-17 |
8.0 - 9.0 |
|
230/60-15 |
5.50 - 7.00 |
200/55-16 |
6.00 - 6.50 |
170/60-17 |
4.50 - 5.50 |
300/35-17 |
10.0 - 11.0 |
|
Harley Trike |
200/60-16 |
5.50 - 6.25 |
180/55-17 |
5.50 - 6.00 |
330/30-17 |
11.0 - 12.5 |
|
|
205/65-15 |
5.5-7.5 |
240/50-16 |
7.00 - 8.00 |
180/60-17* |
4.25 - 5.50 |
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|
18" |
20" |
21" |
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|
110/90-18 |
2.15 -3.00 |
210/40-18 |
7.00 - 8.00 |
140/60-20 |
3.75 |
180/50-21 |
5.5 |
|
120/90-18 |
2.50 - 3.00 |
240/40-18 |
8.00 - 9.00 |
150/55-20 |
4.5 |
200/70-21 |
6.25 |
|
130/80-18 |
2.50 - 3.50 |
250/40-18 |
8.50 - 9.50 |
200/40-20 |
6.00 - 7.00 |
260/35-21 |
9 |
|
140/70-18 |
3.00 - 4.50 |
260/35-18 |
8.50 - 9.50 |
220/50-20 |
6.50 - 7.50 |
||
|
150/70-18 |
3.50 - 4.50 |
260/40-18 |
8.50 - 9.50 |
280/40-20 |
9.50 - 10.5 |
23" |
|
|
160/60-18 |
4.25 - 5.00 |
280/35-18 |
9.50 - 10.5 |
180/50-23 |
5.5 |
||
|
170/60-18 |
4.00 - 5.00 |
300/35-18 |
10.0 - 11.0 |
200/30-23 |
6.5 - 7.5 |
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|
180/55-18 |
5.50 - 6.00 |
310/35-18 |
10.0 - 11.0 |
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|
200/50-18 |
5.50 - 6.50 |
360/30-18 |
13 |
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|
200/55-18 |
5.50 - 6.50 |
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|
Some of the motorcycle tires have a lettering designation. The millimeter(mm) equivalent for it: MH - 80mm, MJ - 90mm, MM - 100mm, MN - 110mm, MP - 110mm, MR - 120mm, MT - 130mm, MU - 140mm, MV - 150mm. For example MU90-16 - 140mm wide, 90% profile, 16" rim Correct rim width may be critical to handling and stability. A tire which is installed on a wider than recommended rim will have a "flattened" profile & a rider may easily reach the edge of the tread during cornering. A narrow rim will alter the tire profile, with a smaller contact patch during braking. Fitment to these rims may result in slippage or air loss. Roughly each +0.5" of rim width will be approximately +0.25" each tire width. |
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* You can also download and save the PDF file for use at any time.
Motorcycle Street Tire Sizes Conversion Chart
Access our motorcycle street tire sizes conversion chart for quick and accurate tire size conversions. Ensure the best fit for your street motorcycle tires.
| Inch | 2.75 / 3.00 | 3.25 | 3.50 | 3.75 / 4.00 | 4.25 / 4.50 | 5.00 / 5.10 | 5.50 | 6.00 |
| Metric | 80 | 90 | 100 | 110 | 120 | 130 | 140 | 150 |
| Alpha | MH | MJ | MM | MN/MP | MR | MT | MU | MV |
Motorcycle Tire Sizes Rim Width Chart
British motorcycle rims (Triumph, BSA, Norton etc.) are marked with a letter and number designation. This is helpful to know what tires you can mount on your rim based on the manufacturer's specs.
| WM0 | WM1 | WM2 | WM3 |
| 1.50 inches | 1.60 inches | 1.85 inches | 2.10 inches |
Brand-specific Motorcycle Tire Size
The following chart shows some common tire sizes, including their width and the diameter. Very handy when choosing which tire will fit your bike, or which motorcycle rear fender to buy to fit the tire you want to run on your new build!
This is just a small selection of the wide array of cool motorcycle tires we stock and ship daily.
| Brand | Size | Width (inches) | Diameter (inches) |
| Avon Safety Mileage MKII | 5.00-16 | 5.2 | 26.3 |
| Avon Safety Mileage MKII | 4.00-18 | 4.4 | 26.7 |
| Avon Safety Mileage MKII | 4.00-19 | 4.3 | 27.6 |
| Dunlop D401 | 130/90-16 | 5.1 | 25.4 |
| Dunlop D404 | 130/90-16 | 5.1 | 25.4 |
| Dunlop K70 | 4.00-18 | 4.17 | 26.73 |
| Duro HF302 | 5.10-16 | 5.3 | 25 |
| Firestone Deluxe Champion | 4.00-18 | 4.25 | 26.6 |
| Firestone Deluxe Champion | 4.00-19 | 4.25 | 27.6 |
| Firestone Deluxe Champion | 4.50-18 | 4.84 | 27.4 |
| Firestone Deluxe Champion | 5.00-16 | 5.35 | 26.4 |
Tire Speed Rating Chart - What You Need to Know
Understand tire speed ratings with our easy-to-use chart to ensure your tires match your vehicle's performance and safety needs.
TABLE OF SPEED RATINGS
|
Speed Ratings (Letters) |
Maximum Speed (mph) |
|
J |
62 |
|
K |
68 |
|
L |
75 |
|
M |
81 |
|
N |
87 |
|
P |
93 |
|
Q |
99 |
|
R |
106 |
|
S |
112 |
|
T |
118 |
|
U |
124 |
|
H |
130 |
|
V |
149 |
|
W |
168 |
|
Y |
186 |
Here are real-world photo examples of motorcycle tire markings:
Firestone Deluxe Champion 5.00-16
Duro Tire 3.50-19 57H Tube Type
Duro 3.50-18 56P Tube Type Motorcycle Tire
Dunlop Gold Seal K70 4.00-18 Tube Type Motorcycle Tire
Avon Speed Master II 3.00-21 R Tube Type Motorcycle Tire
Coker Motorcycle Tire 4.00-18 64P Tubed Type
Shinko 3.00-21 M/C 57S Tube Type Motorcycle Tire
Avon AM7 Safety Mileage MKII 4.00-18 M/C 64S Tube Type Motorcycle Tire
Coker Tires Firestone Champion Deluxe 5.00-16 71P Motorcycle Tire
In conclusion, understanding motorcycle tire sizes is crucial for ensuring optimal performance and safety. By using a motorcycle tire size calculator and referring to a tire size comparison chart, you can easily determine the best tires for your bike. Whether you are looking for sport, touring, cruiser, or classic motorcycle tires, being well-informed will help you make the right choices for your beloved motorbike and enjoy great rides.
For a wide selection of high-quality motorcycle tires, check out the Bate Baja product lines available at Lowbrow Customs. We offer durable and high-performance options tailored to various riding styles and conditions.
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