Metric / Inch Tire Size Converter Enter your tire size information into one side of the tire size converter below to convert metric tire sizes to inches or inch tire sizes to their metric equivalents. (Example: 315 / 75 R 16) (Example: 35 x 12.50 - 16)- Need help with this calculator? Check out the new comments section below! Metric and Inch Tires Sizes While standard SAE tire sizes are easy to understand (a 35x12.50-16 tire runs 35 inches tall by 12.5 inches wide for a 16 inch wheel), many popular tires, particularly those under 35" tall, use harder to visualize metric dimensions (a 315/75R16 tire is 315 mm wide with a sidewall height that is 75% of the width for a 16 inch wheel). Converting a metric tire to inches can be done with the equation below, however, the above calculator is much easier!R [16] = [ (Tire Width x Aspect Ratio x 2) / 2550 + Wheel Diameter ] x [ Tire Width / 25.4 ] - [ Wheel Diameter ] = [35] x [12.4] - [16] Popular Tire Size Equivalents

Metric Tire Size Conversion Inch Equivalent 255 / 85 R 16 = 33 x 10.04-16 = 33 x 10.0 - 16 305 / 70 R 16 = 33 x 12.01-16 = 33 x 12.0 - 16 305 / 65 R 17 = 33 x 12.01-17 = 33 x 12.0 - 17 305 / 55 R 20 = 33 x 12.01-20 = 33 x 12.0 - 20 325 / 50 R 20 = 33 x 12.80-17 = 33 x 12.5 - 20 285 / 75 R 17 = 34 x 11.22-17 = 34 x 11.5 - 17 275 / 65 R 20 = 34 x 10.83-20 = 33 x 11.0 - 20 315 / 75 R 16 = 35 x 12.40-16 = 35 x 12.5 - 16 315 / 60 R 20 = 35 x 12.40-20 = 35 x 12.5 - 20 325 / 80 R 16 = 36 x 12.80-16 = 37 x 12.5 - 16 355 / 80 R 16 = 38 x 13.98-16 = 38 x 14.0 - 16 345 / 85 R 16 = 39 x 13.58-16 = 40 x 13.5 - 16 Helpful Tire Size Tips If upgrading to larger tires, use our gear ratio calculator to find your recommended gear ratio. Tire width is the maximum width of the tire which is usually at the sidewall of an inflated tire. Tread width is the actual width of the tire tread (which is normally less than the tire width).

An "LT" after the tire size indicates that the tire is designed for "Light Truck" use. Crawlpedia is proudly supported by Filthy Motorsports, a specialty off-road racing and 4x4 parts shop in Boulder, Colorado. Want to see your banners and links on Crawlpedia? It's easy, affordable and very effective, just contact us to get started! Click the Back button #345,925 in Automotive (See top 100) #395 in Automotive > Wheels & Tires > Tires > Light Truck & SUV > All-Terrain & Mud-Terrain 63.9 pounds (View shipping rates and policies)The type of tire you choose will affect the gas mileage, the wear and tear on parts, and of course, your wallet.  Many owners begin with dreams and visions of 40” tires and 6” lifts.  idea, if you’re a rock crawler and use the Jeep strictly for off-road use.  In reality, however, most of the time your spouse has to commute in your Jeep 50 miles daily on the freeway.  If you’ve got 40” tires, the gas mileage and wear and tear of commuting will get expensive.

A range of options exists, and we’ll discuss a few examples from a small 255 mm, like a stock tire size that comes with a JK, up to a large 40 inch tire.Dalmatian Puppies For Sale In Orange County You can actually go larger than 40, if you want to go monster truck.Dogs For Sale Moultrie GaA tire measurement numbering system can be found on theHomes For Sale Hwy 319 Arkansas inside wall of the tire.  a metric tire you might read: 255 / 75 R 17.  The first set of numbers (255) refers to the tire width inThe next set of numbers (75) is the sidewall aspect ratio, a percentage which tells us how tall and how narrow the sidewall of the tire is in millimeters.  So in the case of our example, the tire’s

sidewall height is 75% of its tread width. To make this easy, let’s set a baseline of 255 mm as the tire width. it’s a 60% series tire, the sidewall will be shorter, stiffer, and more resistant to cornering forces.  75% series, like our example above, it will have a taller sidewall, be more prone to rolling under in a corner, and provide more cushion on a bump due toThe next part of the number system describes the tire’sIn this case we have an R, telling us that this tire is a radial tire, or was made using radial construction, which is the very most common type these days.The last two digits in the system (17) represents the tire’s rim diameter in inches. To sum up, a stock size tire is:Tire Width:                             255 mmSidewall Aspect Ratio:     75% inches                                                JK's have just enough wheel clearance inside the fender that

a 33” tire can actually be used without you’re taking it off-road, some changes are necessary to avoid the risk ofThe other tire measurement number system is that of inches,For example: 33 x 12.50 R 15.  In this case, the 33 refers to the full length diameter of the tire in inches, from the ground to the tip-top of the tire. The next number (12.50) will be the width of the tire in inches.  last number (15) is, again, the rim's Tire Diameter:                         33 inches inchesThis tire size works well for someone who likes off-road, hitting some trail runs on occasional weekends, but uses their Jeep primarilyThis will have minimal effect on your gas mileage and also your ride. You’ll be able to use this tire with at least a simple JK 2.5” Performance Budget Boost.  It will offer a nice look, but still haveNext up is the 35”.  35’s are one of the most popular tires onThis size requires a lift kit, but

you can get by smoothly with a 2.5” or 3” Lift. This gives better ground clearance, but will maintain minimal effect on your drive-ability, handling very nicely on the road.Then we have the 37”.  An example would be 37 x 12.50 R 17.  The 37” tire basically moves you up to the next level—now you’re looking at gear changes to recover from power lost due to larger, heavier tires, and a decrease in gas mileage.  Despite these detriments, when you get off road, these will perform with excellence. 37’s will require a 4” Lift for off-road use.  You can risk a 3” lift, but it’ll be tight.Next up is Dennis’ favorite, the 38”.  Not only does it provide an extra inch in height, but it goes up to 14.50 inches in tire width (38 x 14.50 R 17).  There are two additional inches in tire width compared to the 37”. 38’s are hard to turn, and you’ll need some horse power behindLast but not least is the 40”.  This tire is hard to