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| 6/19/2015 | Tri-City Motor Speedway - Auburn, MI Kids Night and Autographs & Greased Pig 5.0 Factory Stocks, Sportsmans, A Modifieds, Street Stocks, Dirt Late Models | Results | | Bobby Kosha (Street Stocks) | 6th | - | 1st | 5th |
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| 6/26/2015 | Tri-City Motor Speedway - Auburn, MI Figure 8 Racing Part Two Stock Cars, Sportsmans, A Modifieds, Street Stocks, Dirt Late Models | Results | | Bobby Kosha (Stock Cars) | - | - | - | 4th | | Bobby Kosha (Street Stocks) | 4th | - | - | 18th |
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| 7/10/2015 | Tri-City Motor Speedway - Auburn, MI Mascot Mayhem Factory Stocks, Sportsmans, A Modifieds, Street Stocks, Dirt Late Models | Results | | Bobby Kosha (Street Stocks) | 3rd | - | - | 5th |
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| 7/17/2015 | Tri-City Motor Speedway - Auburn, MI 360 Sprints - Winged: SOD-Sprints On Dirt (360s) Factory Stocks, Sportsmans, A Modifieds, Street Stocks | Results | | Bobby Kosha (Street Stocks) | 2nd | - | - | 8th |
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| 7/24/2015 | Tri-City Motor Speedway - Auburn, MI Faster Pastor Race Night A Modifieds, Street Stocks, Dirt Late Models, Generic 1 | Results | | Bobby Kosha (Street Stocks) | 4th | - | - | 20th (DNF) |
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| 7/31/2015 | Tri-City Motor Speedway - Auburn, MI Mystery Night Factory Stocks, Sportsmans, A Modifieds, Street Stocks, Dirt Late Models | Results | | Bobby Kosha (Street Stocks) | 2nd | - | - | 2nd |
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| 8/7/2015 | Tri-City Motor Speedway - Auburn, MI Figure 8 Racing Championship Stock Cars, Sportsmans, A Modifieds, Street Stocks, Dirt Late Models | Results | | Bobby Kosha (Street Stocks) | 2nd | - | - | 9th |
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| 8/15/2015 | Silver Bullet Speedway - Owendale, MI Cheeseburgers at the Bullet DIRTcar Late Models, DIRTcar UMP Modifieds, Asphalt Mini Stocks, Stock Cars, Sportsmans | Results | | Bobby Kosha (Stock Cars) | 3rd | - | - | 14th |
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| 8/21/2015 | Tri-City Motor Speedway - Auburn, MI Family and Autograph Night & Figure 8 Racing Championship Factory Stocks, Stock Cars, Sportsmans, A Modifieds, Street Stocks, Dirt Late Models | Results | | Bobby Kosha (Street Stocks) | 1st | - | - | 6th |
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| 8/29/2015 | Silver Bullet Speedway - Owendale, MI Topless Night DIRTcar Late Models, DIRTcar UMP Modifieds, Asphalt Mini Stocks, Stock Cars, Sportsmans | Results | | Bobby Kosha (Stock Cars) | 2nd | - | - | 6th |
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| 9/6/2015 | Merritt Speedway - Merritt, MI Gene Kregear Engine Pro Championship Weekend - Fireworks & Party DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, Sportsmans, Lightning Sprints, Dirt Pro Trucks | Results | | Bobby Kosha (Factory Stocks) | - | - | - | 17th |
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| 9/11/2015 | Tri-City Motor Speedway - Auburn, MI Battle By the Bay Day One Dirt Super Late Models, Factory Stocks, Sportsmans, A Modifieds, Street Stocks, Dirt Late Models | Results | | Bobby Kosha (Street Stocks) | 2nd | - | - | 18th (DNF) |
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