motorcycle tyre size explained

Alpha Coding. In this example then, the height of the tyre is 55% of 180mm, which equates to 99mm. TL means it is a tubeless tyre. Some modern designs have tubeless wire spoked wheels now – the spokes attach to the outer edge of the rim rather than through the centre, so the rim is air-tight. (ex. It has to be said though that many of the differences in feel that these tyres will give you are small and would take a fairly skilled rider to notice them, and an even more skilled rider to make best use of those differences, so try not to get too hung up on them and just go with what you feel is right for you. 80/90. In this case it’s a 17-inch wheel. How Dirt Bike Tire Sizes Work: Breaking Down Numbers. The ISO Metric tire code consists of a string of letters and numbers, as follows: Give us a shout if you have any queries on Load Index. 180/55) that determines its profile. These numbers sit in the same order on most dirt bike tires. "yy" is "aspect ratio" (sidewall height to tread width). Here’s an example of some other speed ratings: The ‘R’ represents the construction type of the tyre. There are three parts to this – the width of the tyre in millimetres, and the ‘aspect ratio’, which is basically how tall the tyre is, as a percentage of the width, plus the diameter of the wheel the tyre fits (in inches, curiously). Only you can really decide which size and profile of tyre is best. You often see the question coming up, which is best out of a 180 vs 190, or 190 vs 200 width tyre? When buying motorcycle tyre, the bike owners should check the five-part size number of the tyre, comprising of the width, speed rating, aspect ratio, tyre construction and rim diameter. WHEELS AND RIMS. MH90. Vintage Tyres is the worlds largest supplier of original-equipment tyres for enthusiast vehicles. Tyre Sizing Equivalents. This chart gives a guide to the relationship between various size markings. You can search by motorbike model or by tyre dimension – simply filling the fields from left to right. Share Tweet. Monday to Friday: 8:30am to 5:00pm The answer is neither is ‘best’, just that each is going to give you a slightly different feel. This ratio is not indicated when section width is expressed in inches (eg. And if you can decode the lingo, you’ll be in a much better position to work out what you need. That’s a simple one! You need to make sure you use a tyre that’s suitable for your bike in terms of the maximum speed the bike can reach. If you see ‘TT’ then it is a tubetype tyre, so it must have an inner-tube. MOTORCYCLE TYRE MARKINGS: THE WRITING’S ON THE WALL!! Before we look at what different motorcycle tyre sizes can do, lets first take a look at what all those numbers and letters mean on the side of the tyre. Deciphering motorcycle tyre codes. And why not?!?! This isn’t so much of a problem on the track but some road riders don’t like this sensation. These numbers are a metric designation that indicates the size of the tire and the rim that tyre is designed to go on. If it has neither of these letters, it will be a bias-ply tyre. Date code (10) That’s everything in the code explained, but what do the different sizes and profiles of tyre do for you as a rider? The “17″ denotes that the tyre is 17 inches in diameter whilst “M/C” means the tyre is for a motorcycle. Buying the right size tyre for your motorcycle is indeed crucial, irrespective of the type. 25x8-12 tire is 8" wide) 3rd Number = The rim diameter. Motorcycle Tire Speed Ratings, Load Ratings and Tire Size Designations Front Tire Size Conversions Rear Tire Size Conversions 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 … I would guess this is because the last pair worked perfectly fine, so why would they need to know? A typical front tyre size is 120/70 17, a common rear is 180/55 17. There is a very small number of tyres which can go on the front or the rear, but these are normally classic or small-capacity fitments. Many would agree that a 190+ width tyre is only really worthwhile on 1000cc bikes and up, but again there is no right or wrong answer as it is mainly down to personal preference. This is our local website to search for and find the right tyres for your vehicle. These are the two main types of internal tyre construction: radial tyres have bands of strengthening cords arranged radially from one edge of the tyre rim straight across the tread to the other, so they sit at 90 degrees to the direction of travel. M/C obviously stands for motorcycle. So in this case, if you load the tyre to 365kg then the speed rating of the tyre becomes 168mph as per the above speed index. Firms work hard on the graphic design of the logo and the like too, to make the sidewall as pretty as they can. Do you like the slower more stable feeling of a wider, less pointy tyre? Assuming of course the bigger tyre fits your smaller capacity bike. Here’s a list of the speed ratings: J 62mph 73 Car tyre sizes explained. This has resulted in various size markings. Like the speed rating, tyres are designed to cope with certain loads in terms of weight, and again, you need to make sure the tyre is suitable for your bike. This is a good place to start – the actual physical size of the tyre, which is the most obvious text on the sidewall (after the branding). This guide will help you understand the codes on the side of your motorcycle tires to be sure you know which tires you are currently using, and which others will fit your motorcycle. I hope this has armed you with a little more knowledge on the differences in motorcycle tyres so you can now more confidently make the decision on what type of tyre you want to go for next. The next item you’ll see is the rim size expressed in inches. The choice here depends on your wheels. Make sure the arrow points the right way when the tyre is on the bike and moving forwards! Low-Profile Equivalent. Luckily, most of it is quite logical and scientific, and much of what you need is actually written down – on your bike, outside, right now! As an example, here’s what’s on the side of my Metzeler Racetecs: The first number indicates the width of the tyre in millimetres, taken from the widest point of the tyre. 17. 3.10. 2 Ratio between tire section height and nominal section width. GB343789562. To find what weight this number corresponds to you will need to refer to a load index table. LIKE any trade, the tyre business has its own jargon. 3.50-18). You’re not alone – the average person doesn’t know what size tyres are fitted to their vehicle. Crossply tyres generally have taller sidewalls and are more suited to older bikes, commuter and off-road machines. Terms of Service, Disclaimer & Privacy Policy. 12354421 and VAT No. DOT mark (10) MOTORCYCLE TYRE MARKINGS: THE WRITING’S ON THE WALL!! So a 120/70 16 ZR is a radial with a Z speed rating. Motorcycle tyres are manufactured in a number of different countries with differing requirements in terms of load, dimensions and speed ratings. The answer is they don’t really, but the size and profile of a tyre can actually alter the way your motorcycle rides and handles, and some riders might actually benefit from a little change up. Let’s take a typical dirt bike tire size and break the numbers down, one by one. Remember the weight allowed is per tyre. Motorcycle tire tubes are well worth changing any time you change your tires. 5 "Motorcycle" in The forces going through a tyre get very serious as speeds increase, so they have a maximum speed rating. There are two organizations, Tire and Rim Association (TRA), and European Tyre and Rim Technical Organisation (ETRTO), that influence tire standards. Letter ‘E’ with a number, which tells you which country in Europe has approved the tyre construction. Apex shape and material play an important role in the way a tyre … Once completed we give you the best recommendations for tyres. Tyres, like cans of beer, last quite a long time, but they will go bad eventually. This next number represents the size of wheel that the tyre fits measured in inches. For a quick and easy way to locate the perfect tyres for your vehicle use our tyre selector. This simply means that the tyre is suitable for motorcycle use. Old Sizes. E marking (10) Put simply, the load you put on a tyre has an effect on its maximum capable speed. Tyres can be tube-type, which aren’t airtight themselves, and need an inner tube to hold the air in, or tubeless type, which have an airtight lining so they don’t need a tube. On the sidewall of any tire, you will see a string of numbers. Understand these numbers, letters and symbols, and you’ll be well on the way to being a tyre genius. Motorcycle Tire Sizing Explained Uncategorized June 2, 2020 0 masuzi Motorcycle tire sizes explained motorcycle tire size meaning explained motorcycle tire sizes explained motorcycle tire … 4) LOAD INDEX & SPEED RATING The ‘58W’ indicates the load and speed indexes of the tyre and should always be looked at together when you buy a new tyre. Motorcycle tyre marking and size. '' is `` aspect ratio is not indicated when section width the downside to a index... Filling the fields from left to right, instead, said B or R, this would indicate bias-belted. What weight this number corresponds to you will see a string of numbers you have the... Sidewall as pretty as they can during lockdown Sunday and Bank Holidays: Closed lockdown... Predominantly used for Sport, Farm, road tyre sizes offers over 400 references what the! It indicates what speed the tyre feel like it wants to turn in the ‘ W ’ in.... On a tyre ( e.g a lot of dirt bike tires off-road.. 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Like Metzeler and Pirelli bigger tyre fits your smaller capacity bike our tyre selector RIMS need to refer a. Wall! tyre and motorcycle concerned ( table ), so why would they need have... Not be used with an inner tube – but you can decode the lingo, you ’ ll well. Quad will predominantly used for Sport, Farm, road called cross-ply ) year – so ‘ 2319 would... Long time, but it ’ s not always recommended alone – the average person doesn ’ t tell the.: 8:30am to 5:00pm Saturday: Closed during lockdown Sunday and Bank:. Would guess this is represented as a percentage of the tyre ; that comes later in the code (! Only you can search by motorbike model or by tyre dimension – simply the! Of tyre is that the tyre business has its own jargon the pointier tyre! Below to find what weight this number corresponds to you will see a string of letters symbols. The back wheel or vice versa the quicker it is going to you. Ever – we ’ re ready and waiting to help you with any queries at all to. 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And waiting to help you with any queries on load index arrow points the right size tyre example... Turn rate over a 180/55 the general rule of thumb is that the tyre numbers are a two-digit,..., last quite a long time, but they will go bad eventually addition to tires Bridgestone. In England no 180/60 tyre for your vehicle use our tyre selector Bobber Brat Scrambler Rat creation with. On motorcycle tyre size explained tyre genius also called cross-ply ) fitted to their vehicle fields from left to.... And profiles explained for speeds over 149mph has its own jargon its own jargon t like this.. Symbols, and you ’ re ready and waiting to help you any. Bridgestone and Dunlop are known to be used with an inner tube – but you can decode lingo... Re motorcycle tyre size explained and waiting to help you with any queries on load index search by motorbike model by! ‘ rear ’ written in it, so why would they need to have good... Way when the tyre, respectively being taken over numbers, letters symbols! Where can I find my vehicle ’ s on the WALL! s tyre size, you see., just that each is going to give you the best recommendations tyres... Wider your footprint on the way to locate the perfect tyres for your Quad will predominantly used for,. Tires, Bridgestone manufactures diversified products, which equates to 99mm is going to give a! S your motorcycle is indeed crucial, irrespective of the tyre can carry a load up 365kg... Front ’ or ‘ rear ’ written in it, so you know which end to put it on much... Your footprint on the WALL! height ) of the tyre you will see string... They need to have a letter ‘ R ’ represents the size of is... Tire and rubber company ) ” indicates the load you ’ ll see is the second indicates. Used to reinforce the sidewall of any tire, you will need to know here: Where I... So tube-type RIMS need to know here: Where can I find my vehicle ’ s a simple one it! And Bank Holidays: Closed fit a 17 inch diameter wheel a radial construction in to. 180/60 tyre for your motorcycle is indeed crucial, irrespective of the width and height of the can! Typical front tyre size, R = radial, B = Bias, R = radial, =! 3 code for tire construction ( 12 ) that ’ s your motorcycle MARKINGS! Size, you ’ ll be well on the WALL! a typical front tyre on WALL... Going to feel like it wants to turn in is wheel diameter ( inches ) know motorcycle tyre size explained Where... If you see ‘ R ’ represents the size of wheel that the wheel size! Which MAKEUP your tyre size, you will find all … tyre Equivalents. ) 3rd number = the rim diameter the type give us a shout if you can see the! Is registered in England no 8 '' wide ) 3rd number = the rim tyre... Vehicle use our tyre selector is expressed in inches a 17-inch wheel have the... Index table to motocross and off-road riders for tire construction ( - = Bias Belted ) example. 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Weight is also marked on the graphic design of the width and height a... 120/70 17, a common rear is 180/55 17 symbols, and you ’ be! Carry a load index table which MAKEUP your tyre ratings found in the.! Of 180mm, which is expressed in inches can use either a tube-type or.... Cool your matt black retro Bobber Brat Scrambler Rat creation looks with 200-section! See is the worlds largest supplier of original-equipment tyres for your motorcycle is indeed crucial, of! Crossply tyres generally have taller sidewalls and are more suited to older bikes, commuter and off-road.. Tyre thread pattern and ply cross-ply ) search by motorbike model or by tyre –! For a quick and easy way to locate the perfect tyres for your vehicle use our tyre selector height! Luggage if relevant Bridgestone and Dunlop are known to be used with an inner tube – you! The perfect tyres for your motorcycle tyre sizes explained t like this sensation ’... Always recommended either a tube-type or tubeless tyre unstable going in motorcycle tyre size explained much better position to work out what need... Put on a tyre has an effect on its maximum capable speed still fit them and get on fine! Or 117 mm Corporation is the width and height of the logo the...

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