A lot of these charts are listed with most tire manufacturers. However, you may not see them all with each manufacturer. Most all of the charts and necessary information you need for tire buying analysis is listed below for easy access in the same directory. This is not, however, a tire or brand comparison.
Decoding Alphanumeric Tire Size Numbering |
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Note: If the letter “R” is not denoted somewhere on the right side of the Aspect Ratio in the tire size, it is a Bias-ply tire. Bias-ply tires will sometimes have a capital letter “B” between the aspect ratio and rim size. Other times there will be no “B” at all. If the letter “R” does appear, it is a Radial tire. |
Example Tire Size: MH90-21 M/C 54H |
(M) = Motorcycle tire, (H) = Tire Width Code (check tire width cross reference table for MH which is 3.00 in (80mm) this instance), (90) = sidewall Aspect Ratio (sidewall is 90% as tall as the width of the tire from side to side), (21) = Rim diameter (inches), (M/C) = stands for Motorcycle tire, (54) = Load Index of the tire (check load index chart for max load which is 467 lbs. in this instance), (H) = is the Speed Rating of the tire (check speed rating chart which is 130 mph this instance) |
Result, a MH90-21 M/C 54H is a 21in motorcycle tire 3.00 in wide with a 90% Aspect Ratio rated for 467 max lbs. at max 130 mph at max air pressure |
Decoding Metric Tire Size Numbering |
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Note: If the letter “R” is not denoted somewhere on the right side of the Aspect Ratio in the tire size, it is a Bias-ply tire. Bias-ply tires will sometimes have a capital letter “B” between the aspect ratio and rim size. Other times there will be no “B” at all. If the letter “R” does appear, it is a Radial tire. |
Example Tire Size: 100/90-19 57H |
(100) = Tire Width (mm), (90) = sidewall Aspect Ratio (90% of tire width), (19) = Rim Diameter (in), (57) = tire Load Rating (check load index chart which is 507 lbs. this instance), (H) = tire Speed Rating (check speed rating chart which is 130 mph this instance) |
Result, a 100/90-19 57H is a 19in tire that is 100mm wide with a 90% Aspect Ratio that is rated for 507 max lbs. at max 130 mph at max air pressure |
Decoding 'Inch Designated' Tire Size Numbering |
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Example Tire Size: 5.00 H 16 4PR |
5.00 = Tire Width, H = tire Speed Rating (130 mph in this instance), 16 = Rim Diameter (in.), 4PR = Casing Strength (ply rating) |
Because motorcycle tires are manufactured worldwide, there are variations in size designations. Therefore, the charts below do not display exact interchangeability, but it can give you an idea of how to compare widths and replacement sizes. The tire width cross reference table should not be used for tires with aspect ratios lower than 80% |
^FRONT^^^^^^
PSI Solo Rider: | PSI 2-UP: | PSI 2-UP/ cargo: | |||
Installation Date | Odometer Reading | Tire Brand | Tire Model | Tire Size | Tube Size |
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REAR | |||||
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PSI Solo Rider: | PSI 2-UP: | PSI 2-UP/ cargo: | |||
Installation Date | Odometer Reading | Tire Brand | Tire Model | Tire Size | Tube Size |
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Tire Width Cross Reference Table 1) | ||||
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Permissible Rim Widths | Metric | Alphanumeric | Standard Inch | Low Profile Inch |
1.60, 1.85 | 70 | MG | 2.75 | - |
1.60, 1.85 | 80 | MH | 3.00 | 3.60 |
1.85, 2.15 | 90 | MJ | 3.25 | 3.60 |
1.85, 2.15 | 90 | ML | 3.50 | 4.10 |
2.15, 2.50 | 100 | MM | 3.75 | 4.10 |
2.15, 2.50, 2.75 | 110 | MN | 4.00 | 4.60 |
2.15, 2.50, 2.75 | 110 | MP | 4.25 | 4.25/85 |
2.15, 2.50, 2.75 | 120 | MR | 4.50 | 4.25/85 |
2.15, 2.50, 2.75 | 120 | MS | 4.75 | 5.10 |
2.50, 2.75, 3.00 | 130 | MT | 5.00 | 5.10 |
2.75, 3.00, 3.50 | 140 | MU | 5.50 | - |
3.50, 4.00 | 150 | MV | 6.00 | - |
4.00, 4.50 | 160 | - | 6.25 | - |
Load Index (LI) Rating 2) | Speed Index Chart3)4) | ||||||
LI | lbs. | LI | lbs. | LI | lbs. | Speed Index | Maximum Speed at Max Tire Pressure |
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33 | 254 | 51 | 430 | 69 | 716 | J | 62 mph |
34 | 260 | 52 | 441 | 70 | 739 | K | 68 mph |
35 | 267 | 53 | 454 | 71 | 761 | L | 75 mph |
36 | 276 | 54 | 467 | 72 | 783 | M | 81 mph |
37 | 282 | 55 | 481 | 73 | 805 | N | 87 mph |
38 | 291 | 56 | 494 | 74 | 827 | P | 93 mph |
39 | 300 | 57 | 507 | 75 | 853 | Q | 99 mph |
40 | 309 | 58 | 520 | 76 | 882 | R | 106 mph |
41 | 320 | 59 | 536 | 77 | 908 | S | 112 mph |
42 | 331 | 60 | 551 | 78 | 937 | T | 118 mph |
43 | 342 | 61 | 567 | 79 | 963 | U | 124 mph |
44 | 353 | 62 | 584 | 80 | 992 | H | 130 mph |
45 | 364 | 63 | 600 | 81 | 1019 | V | 149 mph*5) |
46 | 375 | 64 | 617 | 82 | 1047 | W | 168 mph*6) |
47 | 386 | 65 | 639 | 83 | 1074 | (W) | More than 168 mph*7) |
48 | 397 | 66 | 661 | 84 | 1102 | Y | 186 mph*8) |
49 | 408 | 67 | 677 | 85 | 1135 | ZR | ZR covers V, W or Y. ZR does not necessarily appear on the flank.9) |
50 | 419 | 68 | 694 | 86 | 1168 | ||
Example: Tire reads 71H: whereas 71 = 761 lbs. and H = 130 mph | |||||||
This tire is rated for a max. of 761 lbs. at max. 130 mph with max. air pressure in tire |
Cross-Reference Chart for Popular Road Tire Sizes10) | Cross-Reference Chart for Popular Off-Road Tire Sizes11) | ||||
FRONT TIRES | |||||
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Metric | Alphanemeric | Inch | Metric | Alphanemeric | Inch |
80/90 | MH90 | 2.50 to 2.75 | 60/100 | 90/80 | 2.50 to 2.75 |
90/90 | MJ90 | 2.75 to 3.00 | 70/100 | 90/90 | 2.75 to 3.00 |
100/90 | MM90 | 3.25 to 3.50 | 80/100 | 100/80 | 3.00 to 3.25 |
110/90 | MN90 | 3.75 to 4.00 | |||
120/80 | – | 4.25 to 4.50 | |||
120/90 | MR90 | 4.25 to 4.50 | |||
130/90 | MT90 | 5.00 to 5.10 | |||
REAR TIRES | |||||
Metric | Alphanumeric | Inch | Metric | Alphanumeric | Inch |
110/90 | MP85 | 4.00 to 4.25 | 80/100 | 80/90 | 2.50 to 3.60 |
120/90 | MR90 | 4.50 to 4.75 | 90/100 | 110/90 | 3.60 to 4.10 |
130/80 | – | 5.00 to 5.10 | 100/100 | 120/80 | 4.00 to 4.10 |
130/90 | MT90 | 5.00 to 5.10 | 110/100 | 130/80 | 4.00 to 4.50 |
140/80 | – | 5.50 to 6.00 | 120/100 | 140/80 | 5.00 to 5.10 |
140/90 | MU85/MU90 | 5.50 to 6.00 | |||
150/80 | MV85 | 6.00 to 6.25 | |||
150/90 | MV85 | 6.00 to 6.25 |
Hardness Testing for Motorcycle Tires | |
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A Durometer was used on a few brands of tires. Below are the results. Neither the specifics of the testing nor the durameter pressure settings were discussed so accuracy of the results cannot be verified. | |
Brand | Durometer Average Test Result |
Avon Super Venom | 6112) |
Bridgestone Battlax | 6513) |
Cheng Shen Barracuda (soft compound tire) | 5214) |
Dunlop D207 | 5715) |
Vee Rubber Co. Street | 6016) |
Vee Rubber Co. Street and Trail | 6217) |
The National Highway Traffic Safety Administration has established the UTQG grading system, the Uniform Tire Quality Grading, to assist consumers in their purchase of tires. Basically it's another tool to be used besides the opinions you gather from trusted friends, mechanics and whatever other sources you may have at your disposal. The key to using this system is to understand that it is a relative comparison system. The UTQG is not a safety rating and not a guarantee that a tire will last for a prescribed number of miles. Under UTQG, manufacturers use three criteria to grade tires: Traction,Temperature and Treadwear. The information is right where you need it when buying the tire: 1, On the paper label affixed to the tread and 2, On the tire molded into the sidewall. 18)The tests are also done in a lab, making it possible to gather much more empirical data, but also calling into question the exact application of that data to real-world conditions.19) | ||
UTQG Traction Grades | ||
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Specifications are based on tests to determine the tire's coefficient of friction on wet asphalt and wet concrete at 40 mph. The tire is given a letter grade depending on the amount of G's the tire can withstand on each surface. The grades are as follows:20) | ||
Traction Grade | G-Force on Asphalt | G-Force on Conc |
AA | Above 0.54G | Above 0.41G |
A | Above 0.47G | Above 0.35G |
B | Above 0.38G | Above 0.26G |
C | Less Than 0.38G | Less than 0.26G |
The traction test does not evaluate the tire's ability to perform dry braking, dry or wet cornering or hydroplaning resistance. These are rather important qualities as well. To evaluate a tire's traction based solely on wet braking is somewhat oversimplifying actual tire performance. A tire that is graded as A for wet braking might well have better lateral grip than another tire graded AA.21) | ||
UTQG Temperature Grades | ||
Temperature grading is based on the tire's ability to dissipate heat while running at high speed against a rotating cylinder. A tire that cannot dissipate heat effectively will break down faster at higher speeds. 22)The “A” rated tire is the coolest running, and even though the “C” tire runs hotter it does not mean it is unsafe. The temperature grade is established for a tire that is properly inflated and not overloaded.23) | ||
Temperatue Grade | Speed (mph) | |
A | Means that the tire is able to run for long periods of time at speeds over 155 miles per hour | |
B | Means that the tire ran between 100 and 155 miles per hour sustained | |
C | Means between 85 and 100 miles per hour sustained | |
All UTQG-rated tires must be able to effectively run at at least 85 mph. Most people won't require a tire to function reliably at 115 mph for long periods of time on US highways. Maybe just 100 mph would be good enough? Does extremely good heat dissipation ability have a positive effect on treadwear breakdown even at lower sustained speeds? What is that effect? UTQG temperature ratings simply don't have those answers, and those are the answers people really need to make informed decisions. Since the tires have to heat up before gaining proper traction, is it better to use a “C” temp tire in colder temperatures? | ||
UTQG Treadwear Grades | ||
Treadwear is perhaps the most complex and least reliable of the UTQG grades. Treadwear grade is tested by running a control tire around a circular track for 7,200 miles, then running the tire to be graded around the same circular track for the same mileage. The treadwear is then extrapolated from this data and compared to a similar extrapolation for the control tire | ||
Treadwear Grade | Tread Life (as compared to an equal control tire) | |
100 | Tread life is equal to the control tire | |
200 | Tread life is twice the treadwear of the control tire | |
400 | Treadlife is four times the treadwear of the control tire | |
However, another tire manufacturer may grade a comparable design 300, so a grade of 150 would last just half as long under their grading scheme. The lesson learned is to not to use one manufacturer's grade versus the other, but instead to compare tire grades within a given brand. Actual treadwear performance can vary tremendously according to the tire's real-world use. Variations in driving habits, service practices (most importantly air pressure maintenance), road conditions and climate affect tire life24) |
Aspect Ratio – Designates the height of the tire, measured from the top edge of the rim to the top of the tire, as a percentage of the width. What this means is that the upper sidewall of a 225/65 tire has a height of 65% of the 225 millimeter width, or 146.25 millimeters tall.
No matter how you look at it, it is a trade-off between the two. Softer stickier tires wear out faster but will yield better traction and harder rubber tires will last longer but you will suffer some traction. The most important feature it seems to many riders is longevity. How long can I ride this tire before having to change to a new one? Your tire's traction may mean your life and it can not be tossed to the way side for the sake of saving a tire change. This is a subject left to the individual rider based on experience, riding conditions, riding style and total bike weight. It's all about heat. Thin walled tires on a heavy 1200cc with a tour pack and 2-up will heat up and wear out faster than the same thin walled tires on a stripped down 883cc. Just because Brand A works on the stripped down 883cc doesn't mean they will work on your buddies stripped down 883 since he may ride at higher speeds or more rough terrain than you.
A lot of things need to be taken into account when changing a tire size.
For the most part, radial tires offer lower temps (leading to longer life), stiffer construction, and the ability to have sidewalls with a lower aspect ratio, resulting in less flex. Bias-ply tires offer a softer, more compliant ride and, typically, a little lower price. Their other main advantage is load- carrying capability. In a given size, you’ll typically see a bias tire handle more weight. It explains why Harley and certain touring bikes use them.
Tire Fitment Charts below are reprinted from the Harley Davidson Portal site. 62)
Front | ||||||
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DUNLOP HARLEY-DAVIDSON PERFORMANCE TIRES | ||||||
Year Model | Stock / Optional | Tread | Tire Size | Rim Size in Inches | Sidewall Style | Part Number |
1998-2003 XL1200S | Stock | GT502F | 100/90-19 | 2.15×19 | B/W | 40554-04A |
2004-later XL except XL Custom, XL1200X, XL1200CX, XL1200V, XR1200, XR1200X, XL1200T, XL1200XS, or 11-later XL1383L. Requires installation of matching GT502 Rear Tire (40555-04A) | Optional | GT502F | 100/90-19 | 2.15×19 | B/W | 40554-04A |
2016-later XL12000CX | Stock | GT502F | 120/70R19 | 3.00×19 | B/W | 43100026 |
1999-2009 XL883C | Optional | GT502F | 80/90-21 | 2.15 x 21 | BW | 43117-09 |
1996-2010 XL1200C | Optional | GT502F | 80/90-21 | 2.15 x 21 | BW | 43117-09 |
DUNLOP HARLEY-DAVIDSON TIRE SERIES | ||||||
2010-later XL1200X | Stock 2010 | D402F | MT90B16 | 3.00 x 16 | BW | 43022-91A |
2008-2013 XR1200/XR1200X | Stock 2008-2011 | D209F RP | 120/70ZR18 | 3.50 x 18 | BW | 43229-08 |
2004-later XL except XL Custom, XL1200X, XL1200CX,XL1200V XR1200/X, XL1200T, XL1200XS, XL1200NS or 2011-later XL883L | (BW) Stock 2004-2010 | D401F | 100/90-19 | 2.15 x 19 | WWW BW | 55193-10 43100033 |
1991-2009 XL883, XL883R, XL883 Hugger (except XL Custom) | Stock | D401F | 100/90-19 | 2.15 x 19 | BW | 43100033 |
1988-2003 XL1200 except XL Custom, XL Sport | Stock | D401F | 100/90-19 | 2.15 x 19 | BW | 43100033 |
1983-1984 XR1000 | Stock | D401F | 100/90-19 | 2.15 x 19 | BW | 43100033 |
1996-2010 XL883C, XL1200C | Stock | D402F | MH90-21 | 2.15 x 21 | BW | 43104-93A |
2012-2016 XL1200V | Stock | D402F | MH90-21 | 2.15 x 21 | MWW | 43100004 |
MICHELIN HARLEY-DAVIDSON TIRE SERIES | ||||||
2011-later XL1200C | Stock 2011-later | SCORCHER 31 | 130/90B16 | 3.00 x 16 | BW | 55035-11A |
2018-later XL1200XS | Stock 2011-later | SCORCHER 31 | 130/90B16 | 3.00 x 16 | BW | 55035-11A |
2010-later XL1200X | Stock 2011-later | SCORCHER 31 | 130/90B16 | 3.00 x 16 | BW | 55035-11A |
2011-later XL883L | Stock | SCORCHER 11F | 120/70ZR18 | 3.50 x 18 | BW | 40879-11A |
2008-2013 XR1200/XR1200X | Stock 2012-2013 | SCORCHER 11F | 120/70ZR18 | 3.50 x 18 | BW | 40879-11A |
2014-later XL1200T | Stock | SCORCHER 11T | 120/70ZR18 | 3.50 x 18 | BW | 43100021A |
2004-later XL except XL Custom, XL1200XS, XL1200X, XL1200CX XL1200V, XR1200/X, XL1200T or 2011-later XL883L | Stock 2011-later | SCORCHER 31 | 100/90B19 | 2.15 x 19 | BW | 43258-07B |
2012-2016 XL1200V | Optional | SCORCHER 31 | 80/90-21 | 2.15 x 21 | BW | 41036-12 |
2004-2010 XL883C | Optional | SCORCHER 31 | 80/90-21 | 2.15 x 21 | BW | 41036-12 |
2004-2010 XL 1200C | Optional | SCORCHER 31 | 80/90-21 | 2.15 x 21 | BW | 41036-12 |
Rear | ||||||
DUNLOP HARLEY-DAVIDSON PERFORMANCE TIRES | ||||||
2004-later XL except XL1200XS, XL1200NS XL1200X, XL1200CX XL1200V, XR1200/XR1200X, XL1200T 2011-later XL883L or 2011-later XL1200C Installation on models with 19“ front wheel requires installation of matching GT502F Front Tire P/N (40554-04A) | Optional | GT502 | 150/80B16 | 3.00 x 16 | BW | 40555-04A |
1996-2003 XL1200S | Stock | GT502 | 130/90B16 | 3.00 x 16 | BW | 40556-06A |
2016-later XL1200CX | Stock | GT502 | 150/70R18 | 4.25 x 18 | BW | 43200030 |
DUNLOP HARLEY-DAVIDSON TIRE SERIES | ||||||
2004-later XL except XL1200XS, XL1200NS, XL1200CX, XR1200/X XL1200V, XL1200T 2011-later XL883L or 2011-later XL1200C | Stock 2004-2010 | D401 | 150/80B16 | 3.00 x 16 | BW | 43200035 |
2004-later XL except XL1200XS, XL1200NS, XL1200CX, XL1200X XL1200V, XR1200/XR1200X, XL1200T 2011-later XL883L or 2011-later XL1200C | Optional | D401 | 150/80B16 | 3.00 x 16 | WWW | 55192-10 |
2012-2016 XL1200V | Stock | D401 | 150/80B16 | 3.00 x 16 | MWW | 43200007 |
1981-2003 XL except XL1200S | Stock | D401 | 130/90B16 | 3.00 x 16 | BW | 40565-91B |
2008-2013 XR1200/XR1200X | Stock 2008-2011 | D209HD | 180/55ZR17 | 5.50 x 17 | BW | 43231-08 |
MICHELIN HARLEY-DAVIDSON TIRE SERIES | ||||||
2004-later XL except XL1200CX, XR1200/X, XL1200T or 2011-later XL883L | Stock 2011-later except XL1200V | SCORCHER 31 | 150/80B16 | 3.00 x 16 | BW | 40878-11 |
2011-later XL883L | Stock | SCORCHER 11 | 150/60ZR17 | 4.50 x 17 | BW | 43216-11 |
2014-later XL1200T | Stock | SCORCHER 11T | 150/70ZR17 | 4.50 x 17 | BW | 43200026A |
2008-2013 XR1200/XR1200X | Stock 2012-2013 | SCORCHER 11 | 180/55ZR17 | 5.50 x 17 | BW | 43200011 |