The width/ratio/rim dimension scheme is actually quite informative as it gives you everything you need to determine the tire size in every direction, even if it does require a calculator. With the older width-rim dimension that we're all familiar with for tractors the overall diameter isn't part of the size description. For example, a 14.9-38 and a 15.5-38 tire are about the same diameter (the 15.5 actually being shorter) but nothing in the description would tell you that. With the width/ratio/rim description the 15.5 would have a smaller number for the aspect ratio and you would know at a glance that it had a lower profile in relation to its width. Automotive tires have been measured this way for decades and in the past 20 years or so the system has been adopted for other types of tires.
Rim diameters are nearly always measured in inches, even in countries where everything else is in metric units. There are very few rims out there with a metric diameter and applications are mostly limited to a small number of older (mid-80's) European cars such as some BMW's.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Tractor Profile: Allis-Chalmers Model G - by Staff. The first Allis-Chalmers Model G was produced in 1948 in Gasden, Alabama, and was designed for vegetable gardeners, small farms and landscape businesses. It is a small compact tractor that came with a complete line of implements especially tailored for its unique design. It featured a rear-mounted Continental N62 four-cylinder engine with a 2-3/8 x 3-1/2 inch bore and stroke. The rear-mounted engine provided traction for the rear wheels while at the same time gave the tractor operator a gre
... [Read Article]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
