A 170/80 means the width is 170mm, and the height would be 80% of that. ) In metric this is a ratio between height and width. The width codes below are for motorcycle tires with an aspect ratio of 80 or greater. This second number is that percent. The grooves circled show the fundamental component of a tire’s performance. Aspect Ratio: In this case it is .60. Can I use a tire with slightly different aspect ratio than OEM? His specialties include Triumph and Harley-Davidsons, and he has helped thousands of people around the world with everything from how to wire their custom bike to rebuilding an engine. The interesting thing about the A/R is that no matter the diameter of the wheel on which it's mounted, nor how wide the tire is, this ratio never deviates from its intended description. EMAILS ARE NEVER SHARED. The second number on a metric tire is to calculate the side wall measurement. Also, because we have all of our tires in stock, we are able to offer the industry's best motorcycle tire shipping. The tire size will also indicate what size rim strip and motorcycle inner tube is needed. Motorcycle Tyre Aspect Ratio Calculator Uncategorized February 12, 2019 0 masuzi Motorcycle tyre size designations ride on tire protection motorcycle tire sizes explained tire chart conversion It will to a degree, but you might not even notice it. The aspect ratio is the height of the sidewall expressed as a percentage of the width. It indicates what speed the tyre is capable of being taken over. which hints at the tyre height (or section height), from bead to the tread, with regards to the tyre width (or section width). And if your order is over $99., take advantage of our FREE shipping. The difference between the two tires you mention is somewhere to this difference: 217/45R17 = 24.6" overall diameter = 77.3" circumference 217/65R17 = 28.0" overall diameter = 87.9" circumference Secondly, when you have a certain size rim (for example, 5 inch rim is designed for a 160 tire), going with a bigger width will squeeze the tire and make it more peaky. This is helpful to know what tires you can mount on your rim based on the manufacturer's specs. Tires made specifically for motorcycles are coded with an M. The tire Width Code is just a letter to substitute for the width of the rim. All of the pricing for mounting and balancing is based on the tire's aspect ratio, which is the middle number of the tire size. Find the quality tires you want at ChapMoto.com. Aspect ratio for most bias ply tires is somewhere around 80 or 90 percent. Browse our extensive inventory now. A 170/80 means the width is 170mm, and the height would be 80% of that. ) Today, racing tire aspect ratios have gone as low as 0.25. First of all, take a look at the graphic below. It's just expressed in a different way. Todd's home garage is full of many different bikes, stock, as well as choppers and bobbers, in addition to engines and other good stuff he has stashed. Can you give some info on your second point? 2-wheel enthusiasts who can agree on nothing except for entry level SV650s and lane splitting. A 180/70B16 is 180mm wide and 126mm high. We have the best motorcycle tires prices online. Tyre aspect ratio explained The side wall code lets you know the tyre specs such as width, load index, diameter, speed rating and profile of a particular tyre. When you buy a tire, there are three keys to its size: tread width, rim size and aspect ratio. Thirdly, it causes the rear ride height to be taller, which decreases your trail, making your bike easier to dip in corners but also making it less stable when you are fully leaned over. If your dimension is in inches, multiply by 25.4 . 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. Heat is the biggest killer of automatic transmissions. This also means that when you buy a used motorcycle… But if you had a slightly wider rear wheel like a 130/80-16, then the rear would be 104mm high. Shop the best 16" 120 80-aspect-ratio Motorcycle Tires for your motorcycle at J&P Cycles. The aspect ratio is a percentage of the section width. A certain design profile is critical in maintain the appropriate contact patch at all angles from straight to max lean. The two-digit number following the section width identifies the tire’s aspect ratio. A 182/65B26 is 18mm wide and 117 high so the bike’s going to sit a little lower – roughly ½”. Motorcycle Tire Guide 4 their usable tread life. The smaller the number the lower profile of the tire. Those low-profile 190-series tires sure look gnarly on the back of a sportbike, and we've seen them pinched onto all sizes of rims. Shop ChapMoto.com…Your Motorcycle Tire Superstore! Can I Use a 255/70/16 as a replacement? Rim strips are rubber strips that go around the rim, covering the inside edges of the spokes, before the tire is mounted. Here's why. *Excludes frames, hardtails and specified oversize items. Purchase price of excluded items is applied toward free shipping level of $79.95. Specifically I'm curious how tire profile affects gearing. This chart shows the approximate comparison of the different size indicators. They help protect the inner tube from a potential puncture from continual wear against the spokes. The alpha numeric method of tire sizing is older than the metric system. Parameters include width, circumference, aspect ratio, diameter, radius, wheel diameter, speed and sidewall height of metric and standard tires. What about longevity? So as long as you are within their recommended range you are golden. Inner tubes are common, though tires are also run without tubes on many modern motorcycles with mag wheels. First off, while a tire may have a certain designation, its not always accurate - different brands can have different size tires. 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. Motorcycle Street Tire Size Conversion Chart: Front Tires: Rear Tires: Metric: Alpha: Inch: Metric: Alpha: Inch: 80/90: MH: 2.50/2.75: 110/90: MP85: 4.50/4.75: 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: 110/90: MN90: 3.75/4.00: 130/90: MT90: 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: … I understand the aspect ratio is the height of the tire in relationship to its width. Tire Sizes Size may be indicated in inches, metric, or by letters (alpha). S=112mph, H=130mph, V=149mph, W=168mph) F- Tubeless (TL) or Tube Type (TT) tire. I understand the aspect ratio is the height of the tire in relationship to its width. If your tire size is 205/55R16, your aspect ratio is 55. In metric this is a ratio between height and width. You can see Todd in many of Lowbrow Customs' YouTube videos where he walks the viewer through all sorts of motorcycle maintenance and service tasks. The smaller the number the lower profile of the tire. Tire Size Conversion Charts. The drawing of the tire tread and its negative ratio … are marked with a letter and number designation. To most people, the numbers and letters on the side of their tires are cryptic and indecipherable. If you are looking at the cross section of a tire, it had certain designed profile to it which would yield the best performance and/or efficiency and/or longevity of the tire. ex. Does it significantly affect handling? Z. You'll definitely notice a change in the handling if you fit a tire with a lower profile in place of the OEM tire. Way back when … motorcycle tires didn't get much larger than an MV85 which is … For example, a 205-65-15 tire has a 205mm tread width and fits on a 15-inch rim. Convert and compare different tire sizes. Todd Muller is known for his experience and knowledge of motorcycle mechanics. Not necessarily better cornering, but different cornering. Secondly, it effectively lengthens your gearing, giving you more top end over acceleration, by a significant amount. ex. M means the tire is for motorcycle use, T is the tire width code, 90 is the aspect ratio and 17 is the rim diameter. The first number is the width of the tire in millimeters, measured from sidewall to sidewall. Looking for some input on tire size and selection, specifically the aspect ratio. This is represented as a percentage of the width of the tyre. X100 Alphabetical Designations The following brands are exempt from additional discounts to the selling price: Drag Specialties, Biltwell, Motorcycle Tires: Understanding Tire Sizes and Codes, VIDEO: How to Install a 21" Lowbrow Customs Ribbed Spool Hub Wheel on a Sportster, Video: How to Install - Lowbrow Customs 21" Spool Hub Wheel Onto a Mid-USA Springer Using Pre-made Spacers, VIDEO: How To Install Extended Fork Tubes On Your Harley-Davidson Motorcycle, Panhead Jim Builds A Sportster Chopper - Part 3, VIDEO: How To: Harley Shovelhead Clutch Cable Replace, Install and Adjustment, Cloth Covered Wire - 16 gauge - sold by the foot - Assorted Colors Available, Weld-On Upper Fender Mount Tab for Curved and Ribbed Motorcycle Fenders, Throttle Tube - 1 inch - Dual Cable - Black. We recommend against buying used tires; you don’t know how many heat cycles they’ve gone through. Shop the best 90-aspect-ratio 120 Metzeler Motorcycle Tires for your motorcycle at J&P Cycles. The weather is always a little unpredictable, so we think it’s essential to talk about how your motorcycle tires perform in the rain. Online shopping for Automotive from a great selection of Motorcycle, Scooter & more at everyday low prices. C- Rim diameter D- Load capacity E- Tire speed rating (ex. First, it gives you better cornering by making the bike fall more into the turn and giving you more edge grip when leaned over. Other than sitting a bit lower, what other considerations are there will a lower profile? 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! You'll notice the tables do not go any further than 150/90 tyre sizes. The sidewall height is a percentage of the width of the tire. Get free shipping, 4% cashback and 10% off select brands with a Gold Club membership, plus free everyday tech support on aftermarket 90-aspect-ratio 120 Metzeler Motorcycle Tires & motorcycle parts.. Inner tubes are common, though tires are also run without tubes on many modern motorcycles with mag wheels. The lower profile tire will cause the motorcycle to steer slower because the front end trail will be increased. We have over 2000 motorcycle tires and dirt bike tires in stock, but with our Tire Finder, you will be able to find just what you need in no time at all. E-Gift Card purchase price does not count toward your total for free shipping. JUST GREAT STUFF. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Changing the height of the tire profile alters the geometry of the chassis like swingarm angles and, rake and trail. My Nissan Xterra OEM is a 255/65/16.

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