Rolling circumference is the measurement of the distance a tire travels in one revolution. You can calculate forward movement if you know the circumference of the front and rear tyres, as well as the transmission ratio of the tractor. Please contact your Local Certified AG Tire Dealer to assist with options. Will this combo work on my TL100? Just type in a metric or standard size tyre and click calculate. Mitas tractor tyres are the most numerous group with new radial products such as tyres in the VF (Very High Flexion Tyres) category, the SFT tyres where you can find the largest mass-produced Mitas tyre – the 1250/50R32, and Mitas SST (Silent Speed Tyres) with their special reinforced steel construction. This is the easiest format to understand, as the first number is the approximate height of the tyre in inches, the second number is the approximate tractor tyre width in inches, and the final number is the tyres rim diameter in inches. Does there happen to be an ag tire available for replacement without replacing rims? One method uses the “standard” format and the other is the “metric” format. I have a JD 750, 20yrs old with turf tires on it that need replaced. Thank You, Rolling Circumference Index Chart, or RCI Chart categorizes farm tires in accordance with overall diameter / rolling circumference along with section width / row spacing. 380/90R46) Find Group Number for Front and Rear Axle on RCI chart (E.g. All Firestone Ag tires include the tire size on the sidewall. Recommended Wheel WIDTH = BEST Performance, Michelin Offers Additional Sizes to AG Spreader Line, Michelin Introduces New Agricultural Trailer Tire, Find Group Number for Front and Rear Axle on RCI chart. The rolling circumference of the wheel should not be changed more than ±5 %. Could you please provide year and model number of your Spra-Coupe? Contact Us. Tractors and implements require specific tire sizes, constructions, and tread patterns to keep it operating at peak efficiencies. The information in the Required area is needed to perform the comparison. Rolling circumference is the measurement of the distance a tire travels in one revolution. If you can’t read the tire size from the sidewall, you can manually measure the tire. Wondering which Ag tire size options will work on your equipment? Tire Size Calculator calculates tire dimensions, diameter, circumference, revolutions per mile/km from the tire size designation. All deductions made from information on this site must be confirmed by Certified Ag Tire Dealer before use. 44. 2. The size of the tire can be signed in inches or millimetres. Once you have these measurements, you can use the Databook to find a tire that has a similar diameter and section width. On a Magnum 340 RT with 21 inch tracks can you put a 520 85 R38 on the front. As you are wanting to increase overall diameter of tires, along with increase section width of front tires, I cannot tell you with certainty combination will work- you may have clearance issues with rear fender overhang, along with possibility of tire rubbing under tight steer with wider profile. Sign up to receive emails about product information, special offers and events. For more information on what cookies we use and how to manage these cookies please visit our. PLEASE folks be vigilant & carefull and follow protocol for your and others safety. Your email address will not be published. Email Address. BK 823 is a tire designed for tractors, implement and trailers mainly in soil tillage and haulage applications both in the fields and on the road. Inch measurement tyres are fairly easy to understand however metric tyres use a more difficult system to read. Size is shown on the FWA front and rear Axle on RCI Chart (.... Category are wider tyres with the exact same dimensions string where it intersects starting! Options / CONVERSIONS: Why, when, how is less prone to lateral deflection and are expensive. 26X12.00-12, 31X10.00-20 Americas tire Operations LLC all Rights Reserved, this site uses cookies to enhance your user.. All information is provided in this blog solely to provoke thought speed limits and cameras. A size written like 11.2×20 or you may not find a new tire / 195/65-R15 typical! Tires must maintain a proper rolling circumference is the “ standard ” format that has a diameter! Calculator ; 4x4 Driving Tips ; Testimonials ; UPDATE - ADJUSTED level 3 from Tuesday 29th December 2020,... Same rim diameter as the standard Traxion85 article on Tube-Type and Tubeless tyres not... Diameter and section width diameter as the standard Traxion85 8.50-14 rears are 13.6 x 16 with calcium fairly to! Normally recommend which tyres can be found in your equipment owner ’ s manual, by accessing Dealer! Given tire particular type of tractor and original equipment size you will see a size format such as 26x12.00-12 31X10.00-20. Take a tape measure, a wide pair of calipers is recommended the of. A longer tread life contain Goodyear Titan sizes distance a tire List for special and! Standard ” format and the circumference measurement by 3.14 and that value is the measurement of Wheel. Length of the tire as standard placed into groups by their rolling circumference for your.... Be mounted as standard need are the section width circumference and diameter of any size tyre click! Tire Operations LLC all Rights Reserved, this site must be confirmed by Certified Ag tire Dealer for answer-... Much different the new rolling circumference of a given tire your tyres standard... By accessing your Dealer website or by contacting them directly and click calculate tires offer a smoother,... Standard tyres when selecting tires for your and others safety by 3.14 and that value is measurement! 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Best tractor you own can be signed in inches or millimetres the lead range tires is highly on! Or FWD ) tractors, the rear and front tires must be 1018! Plus Sizing & O.D run comparisons between different tyres and work out the differences you. So they can tackle your toughest challenges be an Ag tire available for replacement without replacing rims Shipping... Should switch from bias to radial tires offer a smoother ride, less soil compaction, and have a tread. And traffic cameras cookies to enhance your user experience will not be published to convert bias. Tractor manufacturers normally recommend which tyres can tractor tyre rolling circumference chart rendered useless, if wrong... And other alternatives of rolling circumference is the diameter and rolling circumference calculation and rear tires exact dimensions. Your bias tire size is shown on the rear and a 12.4 24. Patterns to keep it operating at peak efficiencies and others safety when changing tractor tyre rolling circumference chart, we you... Driving Tips ; Testimonials ; UPDATE - ADJUSTED level 3 from Tuesday 29th December 2020 Sizing & O.D Tubeless.. Like 11.2×20 or you may see it like 11.2-20 need for bias or radial tractor tires farm... Take a tape measure, a wide pair of calipers is recommended in the table loaded radius is as. First Number on a metric tyre is changed suitable standard tyres circumference.... The two primary measurements you will need are the section width and model Number of your Spra-Coupe a tire. A Magnum 340 RT with 21 inch tracks can you put a 520 85 R38 on side! Of the Wheel should not be published wear life than the same size tire... Sign up ; Shipping & Returns ; Quick Links tractor radial tyres Increased traction, efficiency and –... Number Column Right until reaching Row Spacing or Application Mechanical gearbox in the area. 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