![]() So, when you see 80 or 90 written on the sidewall of the tire after the width of 120, you have to understand that the height of the sidewall from tread to the rim is 80 or 90 percent of the width of 120mm. By aspect ratio, the height of the tire’s sidewall is indicated. Instead, a percentage measurement approach is used here. However, millimeter measurement is not a standard for aspect ratio. Generally, a slash is used to separates the aspect ratio from the width. The number that sits next to the width is the aspect ratio of the sidewall. In this way, a tire of 110 mm will be 4.330 inches in width while a tire of 120mm will be 4.724 inches. What you need to do is to divide the millimeters by 25.4. However, if you are interested, you can also calculate the millimeters of width into inches. So, if you see 120 or 110 written on a tire sidewall, you have to understand that it is the width of the tire in the millimeters. It is generally measured and expressed in millimeters (mm). One of the most common measurements that you see on the sidewall of the tire is the widest distance between the tire sidewalls. We are going to talk more about this issue below. What dirt bike tire size you need depends on a variety of factors. So, which one of these do you need? It might be the first one or the second, or maybe neither of these. You will see the same for the front tires with a little bit increase in the diameter. If you look at the sidewall of a typical rear tire of a dirt bike, you might see 120/80-19 or 110/90-19 in it. These express the tire size and rim diameter of the tire. If you have a closer look at the side edge or wall of the tire, you will see some numbers separated by a slash (/) and dash (–). Decoding The Numbers And LettersĪ good understanding of the aspect ratio is the key to finding the right dirt bike tire. And how to choose the right-sized tire for your dirt bike. We will also help you with tire categories, dirt bike tire conversion chart. In this article, we are going to decode the numbers you see on the side of the tire to let you know what they mean. Deciphering the dirt bike tires will be easy if you can read this post till the end. However, it might not still be as tough as you might think it now. You would easily estimate that you require 4.50-5.00″ x 18″ tire if you own a dirt bike featuring 250cc to 500cc and 3.50-3.75″ x 18″ for 125cc 2-stroke.īut, when as soon the manufacturers turned their face to the metric system for describing their dirt bike tire sizes, things became complex like programming languages. Things were easy in the past when you could understand everything of width and diameter from the inches. The numbers and letters that you see on the tires of your dirt bike might seem Greek to you if you do not know what they mean. 10 Best foldable electric scooter with seat.Best electric scooter for heavy adults.Best electric scooter with removable battery.10 Best Electric Scooter for Teenagers: Safe, and Affordable!.10 Best Ultra Lightweight Folding Mobility Scooter Review.Best Dirt Bike Tires For Woods And Trail Riding.Motorcycle Helmet Communication System Reviews.Best Dirt Bike Helmets With Goggles And Gloves.Best Youth Dirt Bike Helmet For Trail Riding Under 100 Dollars.Best Full Face Helmet For Harley Riders.10 Best Dirt Bike Tie Down Straps | Ratchet | Cam Lock | Soft.Best Dirt Bike Hitch Carrier That Will Make Your Life Easier. ![]() ![]()
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