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| 6/20/2015 | Tri-City Motor Speedway - Auburn, MI Dirt Bike and ATV Flat Track Racing (Saturday) 50cc Multi-speed Stock, 50cc Chain, 65cc, 85cc, 250cc Open, 251cc+ Open Single, 450cc A Class, 450cc B Class, 251cc + Open Twin, 30+, 40+, 50+, Vintage 400cc, Vintage 401cc+ Open, Modern Vintage 401cc+ Open, Combo 16+, 250cc+ Open Quad, 50cc Shaft | Results | | Joey Howerd (85cc) | - | - | - | - | | Joey Howerd (450cc B Class) | 5th | - | - | 7th |
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| 6/21/2015 | Tri-City Motor Speedway - Auburn, MI Dirt Bike and ATV Flat Track Racing (Sunday) 50cc Multi-speed Stock, 50cc Chain, 65cc, 85cc, 250cc Open, 251cc+ Open Single, 450cc A Class, 450cc B Class, 251cc + Open Twin, 30+, 40+, 50+, Vintage 400cc, Vintage 401cc+ Open, Modern Vintage 401cc+ Open, Combo 16+, 250cc+ Open Quad, 50cc Shaft | Results | | Joey Howerd (450cc B Class) | 2nd | - | - | DNS |
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| 9/19/2015 | Tri-City Motor Speedway - Auburn, MI Dirt Bike and ATV Flat Track Racing (Saturday) Hobby Stocks, 50cc Multi-speed Stock, 50cc Chain, 65cc, 85cc, 250cc Open, 251cc+ Open Single, 450cc A Class, 450cc B Class, 251cc + Open Twin, 30+, 40+, 50+, Vintage 400cc, Vintage 401cc+ Open, Modern Vintage 401cc+ Open, Combo 16+, 250cc+ Open Quad, Quad B Class, 50cc Shaft | Results | | Joey Howerd (450cc B Class) | - | - | - | 6th |
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| 9/20/2015 | Tri-City Motor Speedway - Auburn, MI Dirt Bike and ATV Flat Track Racing (Sunday) Street Stocks, 50cc Multi-speed Stock, 50cc Chain, 65cc, 85cc, 250cc Open, 251cc+ Open Single, 450cc A Class, 450cc B Class, 251cc + Open Twin, 30+, 40+, 50+, Vintage 400cc, Vintage 401cc+ Open, Modern Vintage 401cc+ Open, Combo 16+, 250cc+ Open Quad, Quad B Class, 50cc Shaft | Results | | Joey Howerd (450cc B Class) | - | - | - | 3rd |
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