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| 4/17/2015 | Winston Speedway - Rothbury, MI Full Program – Best Appearing Car Award For Each Class DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 5th | - | - | 9th |
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| 4/24/2015 | Winston Speedway - Rothbury, MI 9th Annual All-Star Performance 50 Sunoco American Late Model Series DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 6th | - | - | 11th |
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| 5/1/2015 | Winston Speedway - Rothbury, MI Full Program - Street Stock Special presented by Mr. B's Pancake House DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 8th | - | - | 15th |
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| 5/8/2015 | Winston Speedway - Rothbury, MI Michigan Dirt Cup Season Opener DIRTcar UMP Modifieds: Michigan Dirt Cup Modified Tour DIRTcar Late Models, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 8th | - | 9th | - |
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| 5/15/2015 | I-96 Speedway - Lake Odessa, MI Spring Brawl DIRTcar UMP Modifieds: Michigan Dirt Cup Modified Tour Asphalt Mini Stocks, B Modifieds, Street Stocks | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 6th | - | - | 16th |
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| 5/22/2015 | Mount Pleasant Speedway - Mount Pleasant, MI Memorial Day Shootout DIRTcar UMP Modifieds, Hobby Stocks, Stock Cars, B Modifieds | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 6th | - | - | 10th |
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| 6/5/2015 | Winston Speedway - Rothbury, MI Full Program - American Ethanol Late Model Tour - Warrior Special DIRTcar Late Models: American Ethanol Dirt Racing Group DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 9th | - | - | 8th |
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| 6/12/2015 | Cherry Raceway - Fife Lake, MI American Flag Day DIRTcar UMP Modifieds: Michigan Dirt Cup Modified Tour Stock Cars, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 7th | - | - | 11th |
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| 6/19/2015 | Winston Speedway - Rothbury, MI Full Program - Street Stock Special Presented by Grasmeyer Bros. L.LC. / Late Models $1000 to Win DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 6th | - | - | 7th |
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| 6/26/2015 | Winston Speedway - Rothbury, MI Kids Night -Fun and Games, Bike Giveaways & More / Roll Over Contest DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 5th | - | - | 7th |
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| 7/3/2015 | Hartford Speedway - Hartford, MI Independence 40 presented by Lane Automotive DIRTcar UMP Modifieds: Michigan Dirt Cup Modified Tour | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 6th | - | - | 16th |
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| 7/17/2015 | Winston Speedway - Rothbury, MI Full Program - Bomber Special Tim Epplett Memorial - Presented by Bolduc's Complete Automotive DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 5th | - | - | 5th |
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| 7/18/2015 | Merritt Speedway - Merritt, MI DIRTcar UMP Modifieds: Michigan Dirt Cup Modified Tour Factory Stocks, Stock Cars, Sportsmans, Dirt Pro Trucks | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 6th | - | - | 14th |
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| 7/24/2015 | Winston Speedway - Rothbury, MI Kenny Blondel Memorial-55 Lap for Street Stocks-Presented by Port City Racecars DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 9th | - | - | 8th |
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| 7/31/2015 | Winston Speedway - Rothbury, MI Michigan Auto Racing Fan Club Night DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 6th | - | - | 7th |
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| 8/14/2015 | Winston Speedway - Rothbury, MI Fan Appreciation Night- UMP Modified Special Presented by Port City Racecars DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 7th | - | - | 12th |
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| 8/21/2015 | Winston Speedway - Rothbury, MI Full Program - American Ethanol Late Model Tour DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 7th | - | - | 12th |
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| 9/4/2015 | Hartford Speedway - Hartford, MI 360 Sprints - Winged: SOD-Sprints On Dirt (360s) DIRTcar UMP Modifieds: Michigan Dirt Cup Modified Tour | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 6th | - | - | 14th |
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| 9/12/2015 | Oakshade Raceway - Wauseon, OH Michigan Dirt Cup Championship DIRTcar UMP Modifieds: Michigan Dirt Cup Modified Tour | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 5th | - | - | 17th |
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| 9/18/2015 | Berlin Raceway - Marne, MI Dirt Cup Fall Nationals - Round 1 DIRTcar UMP Modifieds | Rain Out |
| 9/19/2015 | Berlin Raceway - Marne, MI | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 7th | - | 6th | - |
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| 9/26/2015 | Berlin Raceway - Marne, MI 410 Sprints - Winged: World of Outlaws DIRTcar UMP Modifieds | Results | | Mike Petersen (DIRTcar UMP Modifieds) | 6th | - | 7th | - |
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