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| 5/9/2015 | Park Jefferson International Speedway - Jefferson, SD Sensational Six - Opening Night Hobby Stocks, Stock Cars, Sportsmans, A Modifieds, B Modifieds, Hornets | Results | | Jim Mathieson (A Modifieds) | - | - | - | 4th |
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| 5/23/2015 | Park Jefferson International Speedway - Jefferson, SD 1st Annual Roger Hackett Memorial Hobby Stocks, Stock Cars, Sportsmans, A Modifieds, B Modifieds, Hornets | Results | | Jim Mathieson (A Modifieds) | - | - | - | 14th |
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| 5/29/2015 | Park Jefferson International Speedway - Jefferson, SD 2nd Annual Carlson Clash - Lucas Oil MLRA vs Corn Belt Clash Dirt Super Late Models: Lucas Oil MLRA with Corn Belt Clash Late Model Series Stock Cars, A Modifieds, B Modifieds | Results | | Jim Mathieson (A Modifieds) | - | - | - | 18th |
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| 6/13/2015 | Park Jefferson International Speedway - Jefferson, SD Sensational Six Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Jim Mathieson (A Modifieds) | - | - | - | 13th |
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| 6/27/2015 | Park Jefferson International Speedway - Jefferson, SD $5 Admission Family Fun Night! Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Jim Mathieson (A Modifieds) | - | - | - | 8th |
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| 6/30/2015 | Hancock County Speedway - Britt, IA | Results | | Jim Mathieson (A Modifieds) | 10th | - | 10th | - |
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| 7/25/2015 | Park Jefferson International Speedway - Jefferson, SD Liberty National Bank Night-Modified Madness & Facebook Frenzy Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Jim Mathieson (A Modifieds) | - | - | - | 12th |
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| 9/19/2015 | Park Jefferson International Speedway - Jefferson, SD 2nd Annual Iron Cup Prelim presented by J&J Fitting LLC. Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Jim Mathieson (A Modifieds) | - | 12th | - | - |
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| 9/20/2015 | Park Jefferson International Speedway - Jefferson, SD 2nd Annual Iron Cup Finals presented by J&J Fitting LLC Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Street Stocks, Hornets | Results | | Jim Mathieson (A Modifieds) | - | - | - | 11th |
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| 10/3/2015 | Park Jefferson International Speedway - Jefferson, SD Fender Fest featuring SLMR Late Models Dirt Super Late Models, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Jim Mathieson (A Modifieds) | - | - | - | 10th |
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