#Tire metric to standard calculator how to

If your car has 17’ wheels, this tire size should work for you.

This is where you’ll need to pay attention to your specific make and model. The third number is the wheel size in inches. To put that in millimeters, you would multiply 315 (the width) by 0.7 (the percentage. The next number (70) represents the aspect ratio of the tire.Īn aspect ratio is the height percentage of the sidewall.Įssentially, it means that the height of the sidewall is about 70% as tall as the width. A 315/70/17 tire is 315 millimeters wide. On the top of your tire, you can measure the metric width yourself by using a tape measure that has metric measurements on it. This width is measured by the tire’s tread when looking from above. Metric WidthĪs we’ve discussed, the first number is the metric width of the tire itself. The standard metric tire size (equivalent to a 35 inch) is 315/70/17. It’s usually three numbers divided by dashes.ĭon’t let this freak you out either–each of those numbers means something and will help you figure out the conversion width of the tire. Where 35” tires are simply labeled with 35”, metric measured tires look like they have an entire equation for measurements. It gets a little more complicated when you look at tire labels. This would be 315 in metric tire measurements. However, for metric tire measurements, the measurement is the width of the tread. Here’s why: the inches measurement (in this case, 35”) is the measured diameter of the tire. Metric tire conversions are a bit trickier than simply converting from inches to millimeters. However, the car tire ratios are a little different. This equation works in every walk of life, not just with car tires. If you have inches and need millimeters, multiply the inches by 25.4 to get the number of millimeters.

The conversion rate is the same: divide the number of millimeters by 25.4 to get inches. Luckily, the difference is simple: metric tires are measured in millimeters while imperial tires are by inches. Knowing the difference between imperial and metric systems is vital to know what kind of tires you need. However, 889 is not the right number–who’s ever heard of 889 tires? Imperial vs. This equation will give you the exact amount of millimeters. The simplest way to convert from inches to the metric system is to multiply the number of inches by 25.4. However, if you go to buy new tires and realize that all of your calculations have been in imperial (inches and feet), you might need a metric tire calculation! Don’t get too stressed: it’s all math that can be done on your smartphone or in your head. Unless you want to pump up your car or trade tire sizes, the manufacturer generally puts the correct size of tire on. When you’re getting new tires on your truck, car, or SUV, your first step is to look at what size tires you currently have. How do I Convert From Inches to Metric for a Tire?

#Tire metric to standard calculator how to

In this guide, I’ll teach you how to calculate the size of a tire and how to properly convert it from inches to metric form. No matter where you buy tires, you have to look at all three variables, not just the width.

35 inch wide tires are as wide as 315-millimeter tires, but the thickness and diameter of a tire should also be taken into consideration. However, more calculations go into the true size of a tire. Since America is the only country not on the metric system, what are 35-inch tires in metric? What Are 35-Inch Tires In Metric?ģ5-inch tires are about 315 millimeters in diameter. However, the measurements of a tire differ where you live. There are tons of different tire widths available, and you need the exact right size for your tire. Buying the right size of tires can be a hassle.