Modern Tire Dealer

JUN 2019

Magazine for the professional tire industry

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M T D J u n e 2 0 1 9 50 A G T i r e T a l k QUESTION: What are the advantages of R-1 and R-1W tractor tires compared to each other? SCOTT SLOAN, ag product manager/ global LSW, Titan International Inc.: In the ag industry traction tires are classified by the depth of tread using the nomenclature R-1, R-1W. is industry standard allows tire manufactures to work within the standardized classifications so machine manufacturers and end users can properly compare tires. e R-1 has been the standard general farming tire for decades. Tread depths for R-1 tires will run from 1.25 inches to 1.75 inches deep depending on the size of the tire. R-1W is of European origin; some call it the European R-1. R-1W tires are generally 20%-25% deeper than a standard R-1 at being said the question then arises what are the benefits of both and what applications are best for each? Typically on smaller HP tractors (less than 150HP) the manufacturers will fit the tractors with the R-1. ese tractors are used in lighter, more general applications. In addition R-1 tires tend to be less expensive and more cost effective for the manufacturers. However, R-1 tires do tend to perform better in some applications. In applications where the tires will see dryer, harder conditions the R-1 will outperform and outlast the R-1W in most cases. R-1W's perform better in soer, slightly wetter soil conditions and typically clean better in those wetter conditions. For example, a self-propelled sprayer is a good candidate for R-1 tires. e 25% deeper lug of the R-1W tends to leave deeper lug or cleat marks in the field, and when making turns on the end rows they tend to rut and disrupt the residue more. During long transport runs the deeper lugs tend to heat up and flex more, causing premature wear. Another example would be in scraper applications, where due to the deeper lug of the R-1W in the high torque hard surface application, the taller lug tends to be more unstable and flex, causing lugs to sometimes be torn from the tire. HARM-HENDRIK LANGE, agriculture tires field engineer, Continental Tire the Americas LLC: Originally the standard pat- tern was the "R-1" type, and the "R-1W" ("W" stands for "wet") was seen as the specialist for wet soil types with approximately 20% more tread depth. Between 1950 and 1975, developments were made in the agricultural tire business, such as the standard fish bone pattern and the radial agriculture tire. Dur- R-1 vs. R-1W in detail James Tuschner By GRAPHICS COURTESY OF TITAN INTERNATIONAL Modern Tire Dealer has partnered with AG Tire Talk to provide answers to the insightful questions farm tire dealers have about farm tire technology. is is the eighth in a series, which is designed to help agricultural tire dealers better connect with their customers. A trending question followed by an abridged version of the answers will appear in our Commercial Tire Dealer section every other month; for the complete answers, check out www.agtiretalk.com! TREAD DEPTH ISN'T THE ONLY DIFFERENCE WHEN COMPARING THE TWO (THREE IF YOU COUNT THE R-2) The R-1 has been the standard general farming tire for decades. Tread depths for R-1 tires depending on the size will run from 1.25 to 1.75 inches deep depending on the size of the tire. R-1W tires are generally 20% to 25% deeper than a standard R-1 R-1 Radial & Bias General farming, works well in good farming applications Wet soil 20-25% deeper than conventional R-1 Tires, wider lug spacing R-1W Radial

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