| | Heat | Dash | B Feature | A Feature |
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| 4/26/2015 | Beaver Dam Raceway - Beaver Dam, WI Wipperurth Memorial 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Bill Wirth (410 Sprints - Winged) | 1st | - | - | 10th |
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| 5/9/2015 | Beaver Dam Raceway - Beaver Dam, WI 410 Sprints - Winged: IRA Interstate Racing Association Winged A-Class, Pro Legends | Results | | Bill Wirth (410 Sprints - Winged) | 9th (DNF) | - | DNS | - |
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| 5/16/2015 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association Non Wing Crate Sprints: Wisconsin wingLESS Sprints | Results | | Bill Wirth (410 Sprints - Winged) | 5th | - | - | 19th (DNF) |
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| 5/30/2015 | Cedar Lake Speedway - New Richmond, WI 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Bill Wirth (410 Sprints - Winged) | 8th (DNF) | - | - | - |
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| 6/6/2015 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association Winged A-Class | Results | | Bill Wirth (410 Sprints - Winged) | 2nd | - | - | 15th |
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| 6/21/2015 | Angell Park Speedway - Sun Prairie, WI 410 Sprints - Winged: IRA Interstate Racing Association Badger Midgets: Badger Midget Auto Racing Association Winged A-Class, Pro Legends | Results | | Bill Wirth (410 Sprints - Winged) | 6th | - | 2nd | 22nd (DNF) |
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| 7/3/2015 | Manitowoc Co. Expo Speedway - Manitowoc, WI Harbor Town Showdown 410 Sprints - Winged: IRA Interstate Racing Association Pro Legends | Results | | Bill Wirth (410 Sprints - Winged) | 9th | - | 9th | - |
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| 7/10/2015 | Dodge County Fairgrounds - Beaver Dam, WI 360 Sprints - Winged: MSA Sprint Car Association 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Bill Wirth (410 Sprints - Winged) | 8th | - | 1st | 12th |
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| 7/19/2015 | Angell Park Speedway - Sun Prairie, WI 410 Sprints - Winged: IRA Interstate Racing Association Badger Midgets: Badger Midget Auto Racing Association Winged A-Class, Pro Legends | Results | | Bill Wirth (410 Sprints - Winged) | 4th | - | - | 14th |
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| 7/24/2015 | Oshkosh Speed Zone Raceway - Oshkosh, WI 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Bill Wirth (410 Sprints - Winged) | 4th | - | - | 24th (DNF) |
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| 7/25/2015 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association with All Star Circuit of Champions | Results | | Bill Wirth (410 Sprints - Winged) | 8th | - | 6th | - |
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| 7/31/2015 | Langlade County Speedway - Antigo, WI 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Bill Wirth (410 Sprints - Winged) | 5th | - | - | 19th (DNF) |
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| 8/1/2015 | Sheboygan County Fair Park - Plymouth, WI 410 Sprints - Winged: IRA Interstate Racing Association Winged A-Class: Badger 600 Winged Micros Winged Outlaw | Results | | Bill Wirth (410 Sprints - Winged) | 3rd | - | - | 23rd |
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| 8/21/2015 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Bill Wirth (410 Sprints - Winged) | 4th | - | - | 3rd |
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| 8/22/2015 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association Non Wing Crate Sprints: Wisconsin wingLESS Sprints | Results | | Bill Wirth (410 Sprints - Winged) | 1st | - | - | 11th |
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| 8/23/2015 | Angell Park Speedway - Sun Prairie, WI 410 Sprints - Winged: IRA Interstate Racing Association Badger Midgets: Badger Midget Auto Racing Association Winged A-Class, Pro Legends | Results | | Bill Wirth (410 Sprints - Winged) | 4th | - | - | 11th |
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| 8/30/2015 | Angell Park Speedway - Sun Prairie, WI 410 Sprints - Winged: IRA Interstate Racing Association with National Sprint League Badger Midgets: Badger Midget Auto Racing Association Winged A-Class, Pro Legends | Results | | Bill Wirth (410 Sprints - Winged) | 8th | - | 9th | - |
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| 9/6/2015 | 141 Speedway - Maribel, WI 410 Sprints - Winged: IRA Interstate Racing Association Pro Legends | Results | | Bill Wirth (410 Sprints - Winged) | 4th | - | - | 8th |
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| 9/19/2015 | Beaver Dam Raceway - Beaver Dam, WI 410 Sprints - Winged: IRA Interstate Racing Association Winged A-Class, Pro Legends | Results | | Bill Wirth (410 Sprints - Winged) | 5th | - | - | 24th (DNF) |
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| 9/25/2015 | Luxy Raceway - Luxemburg, WI Battle by the Bay 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Bill Wirth (410 Sprints - Winged) | DNS | - | 3rd | 21st |
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| 9/26/2015 | Dodge County Fairgrounds - Beaver Dam, WI 360 Sprints - Winged: MSA Sprint Car Association 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Bill Wirth (410 Sprints - Winged) | 7th | - | 2nd | 8th |
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| 10/3/2015 | Plymouth Dirt Track-Sheboygan Co Fair - Plymouth, WI 360 Sprints - Winged: Midwest Sprint Car Association with MSA Sprint Car Association 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Bill Wirth (410 Sprints - Winged) | 6th | - | - | 12th |
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| 10/10/2015 | Eldora Speedway - Rossburg, OH 360 Sprints - Winged: NRA Sprint Invaders 410 Sprints - Winged: All Star Circuit of Champions 410 Sprints - Non-Winged: BOSS Buckeye Outlaw Sprint Series | Results | | Bill Wirth (410 Sprints - Winged) | 8th | - | 19th | - |
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