ADVERTISING FEATURE Understanding ATV Tire Sizing I t’s very important to get the right size when purchasing tires and wheels. Keep in mind that although used tires can be available for a discounted price, usually you cannot return them, so knowing the size you require is very important. For traditional tire sizes, your numbers will look something like this: 25x8-12. This means this particular tire is 25” tall, 8” wide, and 12” is the diameter of the wheel that the tire will mount to. All tire sizing is given when the tire is mounted and inflated to the recommended level of air pressure. Some tires may be in metric; if this is the case, traditional sizing is usually on the tire as well and is the most common for ordering. Upsizing tires can be a favourite pastime. You can safely go up two sizes from stock, but for the extreme adventurer going larger can be done with more extensive modifications, so always keep in mind that everything has a counter effect. The higher you go the less stable and safe the machine becomes. For wheel sizing, the numbers look a little different: 8x8, 3+5, 4/110. This means: 8” is the diameter of the wheel and also the inside diameter of the tire, 8” is the width of the wheel, 3” is the offset in inches from the inside, 5” is the offset in inches to the outside. 4 is the number of bolt holes in the wheel and 110 is the spacing of the bolt holes, most times in millimetres. Measuring bolt patterns with a 3-LUG, you will need to measure the diameter of an imaginary circle that passes through the centre of all three bolt holes. A 4-LUG measures the distance between the centre of two holes directly across from one another, and a 5-LUG measures from the back (side) of one hole to the centre of the second hole. The most common is a 4/110 bolt pattern. For more information, please contact Death Wobble Rentals and find out the best tires and wheels for your machine. This page sponsored by: 4906 47 Street Leduc, Alberta The Roughneck • March 2012 11