Its actual width is normally less, but varies according to how the tyre is designed and the width of rim to which it is fitted. Alloy wheels for sale, home of alloy wheels online. But what they have forgotten in their equation is the tyre. Different tires have different width. ... Rim Width: 8J. In the above example, the tyre profile/height will be equal to 65% of 185 (tyre width). Nobody talks about the shape that the tyre takes when the rim width increases. Tyre Size - The tyre size is easy to read, once you know how. This tool is great for working out if your new wheels will give you more or … First enter your current wheel width and offset. It will also show how far the outside of the wheel edge will extend or retract. So you get different size of rims. Online fitment guides - See what fits. Try the Wheel Offset/Backspace Calculator which calculates the offset and the backspace, the important measurements for positioning the wheel/tyre assembly inside the wheel well. A very useful tyre calculator when searching for tyres that are a different size than stock. The ratio of tubeless tyre width to rim width may be significantly different from 1.8:1. Custom wheels, rim tire packages. Tyre size for rim size/width calculator tells you what tyre sizes to go for, for the size of your rim. The thumb rule to calculate sidewall height says that for every 10mm increase in width of tyre, the sidewall height (or aspect ratio) should be reduced by 5%. Our tyre size comparison calculator takes the measurements of two tyres and compares the overall diameter, tread width, sidewall, and difference percentage (%). Supplier of alloy wheels and tyres packages, alloys, wheels, tyres and car alloys. It will show the clearance between the inside of the wheel and the strut housing. The sidewall height of our stock tyre is 65% of the thread width (185/65 R15). Low rate finance and fast delivery available. Tires. Contact Us. Follow below Calculator sheet Rim Width/Tyre Size Chart This chart has been compiled from a number of tyre manufacturers charts to give an overview of fitments possible, for more specific information contact your tyre manufacturer. Wheel fitment and tire size guide and knowledge base, Information guide to help before purchasing alloy wheels, Find out what tire size will fit on your Vehicle, Find matching vehicles by specific Bolt Pattern, Find matching vehicles by specific Tire Size. Today, we hear a lot about “modern rim shape”. Calculator. Link to this comparison. This second number is that percent. An example of such tyre marking: 31×10.5 R15, where 31 is the overall wheel diameter in inches, 10.5 – the tread width, 15 – the rim diameter. Offset (ET) ET43. Then enter your new wheel width and offset. Tyre Size Calculator Enter your existing wheel and tyre specification in 'Existing Setup' then enter the specification of your potentially new wheels and tyres to see what a difference it will make! Let’s use 205/55 R16 as an example. Please enter the width, aspect ratio and rim size for your current tyre and proposed new tyre. The second value (55) is the tyre profile in percentage. 3) Type of Tyre: There are 3 types of tyre construction: Bias Belt, Diagnol cross-ply, and Radial. Disclaimer: To determine a tyre’s exact width on a particular rim, you need a Vernier calliper to measure it. Each tyre manufacturer has a specific rim width range on which the tyre can be mounted. Suppose, European tire, the Tire and Rim Association (TRA), Standard organizations and Rim Technical Organization (ETRTO) made rim of various sizes for different rims. Understanding Tyre Size Maths. Please select your tyre width. RIM WIDTH Unfit tire size could damage the rim and put the riders in danger. 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