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TSM Rear Ag Tire Research Report

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TSM Rear Ag Tire Research Report Rear Ag Tire Research Report Fatima Correia Tire Stewardship Manitoba Student Research Rear Ag Tire Research Report Purpose of Study The purpose of the rear agriculture tire research was to determine the average life span of a farm tire so Tire Stewardship Manitoba (TSM) can use this information in consideration for setting appropriate eco-fees on these OTR (Off The Road) tires. Method of Study The research was done through OTR Recycling and Reliable Tire Recycling, by taking digital photos of a tire’s sidewall. The tire’s sidewall, will list information including the date and manufacturing plant code, implementation rating, ply rating, and a tire mould code. Each code was then entered into a Microsoft Excel spreadsheet to be reviewed and analyzed. The Agricultural Tire There are a few ways to separate an agricultural tire from other OTR tires. The ply rating that is listed on the tire should be a relatively lower number and should not exceed 12 ply, to stand as an agricultural tire. These tires have a smaller ply rating because they need to be significantly lighter, so no extra weight is applied to the farmer’s field and helps to prevent damage to the crop. 2 Rear Ag Tire Research Report Another way of identifying an agricultural tire is by examining the tread markings. The Agricultural tire will have more spaces between treads; this is so there will be less contact to the farmer’s field which prevents the soil from becoming compressed. Although this is a way of recognizing an Agricultural tire from other OTRs it is not the most accurate way to identify between tires. 3 Rear Ag Tire Research Report The most accurate way to determine which category a tire will fit in is through the implementation rating. There are roughly twenty-three different implantation ratings for Agricultural tires, with R-1 appearing to be the most used. Manufacturers’ Date Codes Date codes on tires can be an important indicator, as manufacturer’s base a tire’s warranty on the date of purchase opposed to tread wear. When dealing with a Goodyear tire (the agricultural sector was sold to Titan) the date code is standardized by a stamp in the tire that should begin with a collection of letters starting with PK, and finishing with a separate stamp that consists of either three or four numbers, which indicate the week and year of manufacture. This format of coding has not changed through the transfer of agriculture ownership, except for the two beginning letters, which can vary due to different plant manufacturing locations. 4 Rear Ag Tire Research Report Titan indicates their manufacturing date by CF then a stamp embedded into the tire which will consist of four digits the first one stands for the decade year the second and third digits stand for the week and lastly the final number is needed to complete the year. Although I was not able to speak to someone from Armstrong because they no longer exist it appeared that they used the same type of coding as Titan. Titan 5 Rear Ag Tire Research Report B.F. Goodrich based its coding on an Alphabetized table; the first three letters indicated the plant, week, and year. Although I was provided information for B.F. Goodrich coding, when decoding this brand of tires I was not able to identify a date code because no coding met this coding pattern. Firestone displays their date coding visibly by VE00000 then a collection of either three or four digits that again indicate the week and year of the manufacturing date. B.F. Goodrich Firestone While researching the date codes, I ran into a few difficulties decoding the data, such as; agricultural tires are not certified to travel on roads therefore are not required to be equipped with a DOT (Department of Transportation) code, which poses the issue of the manufactures not being required to visibly declare the tires date and allows for alphabetized year charts, that will not be sent out for review. Another issue that was faced was over the years some companies had sold their agriculture tire sector to other companies, which caused some problems when speaking to people who did not work with the previous company. I also spoke to some OTR dealers within the surrounding areas of Winnipeg, but the dealers also had no 6 Rear Ag Tire Research Report knowledge about reading the date codes, aside from the codes consisting of three or four digits. When speaking to different warranty people within agriculture manufacturers as well as the OTR warranty sector little answers were given, so it was needed to repeat calls and speak to someone new. Due to some of the difficulties that were encountered while researching the correct formats for dates some companies formats had to be assumed including; Alliance, Armstrong, Concept, Co-op, Denman, Galaxy, General, Industrial Lug, Kelly-Springfield, Maxi-Trac, MDG, Michelin, Pirelli, Power Glide Rib, Power Mark, Ranger, Summit, Versatorque, Wide Wall, and Yokohama. Although these companies date codes were assumed, the formats appeared similar between companies. The Excel spreadsheet was also e-mailed to others such as; David Lamb, Abe Penner, Vic Heibert, Moe Tressor, and Ashley Leibl to help assess the unknown date codes. After exhausting many possible research avenues, there were 150 sidewalls marked with codes that could not be distinguished, and are defined by this study as “un-decoded”. It has been suggested that these tire code samples could not be decoded because they are possibly too old for anyone to know the coding method that was used. This is possible, but a more likely explanation is that these tire codes’ significance, either as the date of manufacture or as some other indicator related to the tire, was not reported by the manufacturer for this study as date codes on agricultural tires are not mandated. 7 Rear Ag Tire Research Report Sample Size A total of 949 tire sidewalls were documented by this study. The original sample size dropped significantly when 148 sidewalls were categorised as industrial; 150 sidewalls were listed as “un-decoded”; and 88 sidewalls documented were determined to be the wrong side of the tire which lists no possible date codes. As such, the original sample size of 949 tire sidewalls was reduced to 559 date codes that could be appropriately measured for this study. Conclusion: Agricultural Tire Life in Manitoba The end of a tire’s life is due to weathering and not decreased tread wear. Based on the information obtained by this study of scrap agricultural tires, the mean service life of an agricultural tire in Manitoba is 17.44 years. 8 Rear Ag Tire Research Report R- Ply Code Code Rating Rating Manufacturer Week Year 2LAK404K R-1 GOODYEAR Aug 1956 53 II7N0K1 R-1 6 PLY GOODYEAR Apr 1956 53 680N36 6 PLY SEIBERLING Jan 1956 53 9M0L997 8 PLY GOODYEAR Dec 1959 50 020973GU R-1 6 PLY SEIBERLING Sept 1959 50 36F1956N R-1 GOODYEAR Dec 1961 48 MEOKC912 GOOD YEAR Nov 1966 43 MF0K18F7 GOODYEAR Mar 1966 43 MT8N0CI GOODYEAR Jan 1966 43 ZK0S6564 8 PLY GOODYEAR Oct 1966 43 2ENN699 R-1 GOODYEAR Nov 1966 43 M0S3N19 R-1 GOODYEAR Sept 1966 43 YF03X15 6 PLY GOODYEAR Mar 1967 42 YE8N2T7 R-1 4 PLY GOODYEAR Nov 1967 42 YT016A33 R-1 8 Ply GOODYEAR Jan 1967 42 YU15A16 R-1 GOODYEAR Feb 1967 42 LV X52045 6 PLY GOODYEAR Feb 1968 41 LV N48295 12 PLY Feb 1968 41 UF15A92 R-3 GOODYEAR Mar 1969 40 US0N66 R-1 4 PLY GOODYEAR Apr 1969 40 UT9G6T9 R-1 10 PLY GOODYEAR Jan 1969 40 E06N760 R-1 6 PLY GOODYEAR Sept 1970 39 GRMX14 GOODYEAR Dec 1972 37 50VJS0 R-1 GOODYEAR Mar 1972 37 5U7N38U R-1 GOODYEAR Feb 1972 37 GE03114 R-1 6 PLY GOODYEAR Nov 1972 37 SU0N79 R-1 4 PLY GOODYEAR Feb 1972 37 DR03135 6 PLY GOODYEAR Dec 1973 36 DRCX19 6 PLY GOODYEAR Dec 1973 36 DRCX19 6 PLY GOODYEAR Dec 1973 36 RN5DA69 R-1 GOODYEAR June 1973 36 VYGX02 6 PLY GOODYEAR May 1974 35 A4ZN26 R-1 4 PLY GOODYEAR May 1974 35 AS07403 R-4 8 PLY GOODYEAR Apr 1974 35 VF03X14 R-1 GOODYEAR Mar 1974 35 VK73X22 R-1 10 PLY GOODYEAR Oct 1974 35 AN07419 8 PLY June 1974 35 FE03X06 R-1 GOODYEAR Nov 1975 34 FE03X45 R-1 8 PLY GOODYEAR Nov 1975 34 FE97008 R-1 GOODYEAR Nov 1975 34 FNON47 R-1 GOODYEAR June 1975 34 PA0N70 R-1 GOODYEAR Aug 1975 34 BEMX03 6 PLY GOODYEAR Nov 1976 33 QNAX06 6 PLY GOODYEAR June 1976 33 8R8N4A5 R-1 GOODYEAR Dec 1976 33 BR73X26 R-1 10 PLY GOODYEAR Dec 1976 33 BR73X51 R-1 10 PLY GOODYEAR Dec 1976 33 BTON43 R-1 6 PLY GOODYEAR Jan 1976 33 BU03XL5 R-1 8 PLY GOODYEAR Feb 1976 33 OU7N1F81 R-1 6 PLY GOODYEAR Feb 1976 33 QCDX04 R-1 6 PLY GOODYEAR Sept 1976 33 9 Rear Ag Tire Research Report QEC3X21 R-1 GOODYEAR Nov 1976 33 QFO7319 R-1 6 PLY GOODYEAR Mar 1976 33 QS03X17 R-1 8 PLY GOODYEAR Apr 1976 33 QY03X09 R-1 6 PLY GOODYEAR May 1976 33 QSO3X09 R-1 6 PLY GOODYEAR Apr 1976 33 BC15A65 R-3 6 PLY GOODYEAR Sept 1976 33 2AX3855 12 PLY ASTRO Oct 1977 32 C003X47 R-1 6 PLY GOODYEAR Mar 1977 32 C33G91N R-1 6 PLY GOODYEAR Jan 1977 32 CT03X60 R-1 GOODYEAR Nov 1977 32 CWKX05 R-1 8 PLY GOODYEAR Apr 1977 32 NA07308 R-1 6 PLY GOODYEAR Oct 1977 32 NT07316 R-1 6 PLY GOODYEAR Nov 1977 32 NW73X66 R-3 GOODYEAR Apr 1977 32 O648 V43072 ASTRO May 1978 31 007S3Z1 R-1 8 PLY GOODYEAR Dec 1978 31 017R3Z2 R-1 GOODYEAR June 1978 31 0S0N3I5 R-1 GOODYEAR Dec 1978 31 U66SNZ R-1 GOODYEAR Dec 1978 31 21GMNT 10 PLY GOODYEAR Dec 1979 30 30MRNT R-1 6 PLY GOODYEAR Feb 1979 30 01FAXY 6 PLY GOODYEAR May 1980 29 13J1XB 6 PLY GOODYEAR Oct 1980 29 31007Y3 R-3 10 PLY GOODYEAR Oct 1980 29 700H3B0 R-1 GOODYEAR Sept 1980 29 72005Y2 I-2 6 PLY GOODYEAR Feb 1980 29 73713Y0 R-1 GOODYEAR Oct 1980 29 01FGXS 6 PLY GOODYEAR Dec 1981 28 550SJS0 GOODYEAR Oct 1981 28 557HJHO 6 PLY GOODYEAR May 1981 28 620GJS0 GOODYEAR Dec 1981 28
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