| Pos. | No. | Driver | Team | Lap time | Diff | Speed | Best Lap | Laps |
|---|---|---|---|---|---|---|---|---|
| 1 | 19 | Martin Truex, Jr. | Joe Gibbs Racing Auto-Owners Insurance Toyota | 37.496 | -- | 192.020 | 2 | 19 |
| 2 | 20 | Christopher Bell | Joe Gibbs Racing Rheem Toyota | 37.503 | 0.007 | 191.985 | 13 | 21 |
| 3 | 24 | William Byron | Hendrick Motorsports Liberty University Chevrolet | 37.553 | 0.057 | 191.729 | 3 | 14 |
| 4 | 54 | Ty Gibbs | Joe Gibbs Racing Monster Energy Toyota | 37.560 | 0.064 | 191.693 | 6 | 25 |
| 5 | 1 | Ross Chastain | Trackhouse Racing Jockey Chevrolet | 37.602 | 0.106 | 191.479 | 5 | 23 |
| 6 | 12 | Ryan Blaney | Team Penske Menards / KNauf Ford | 37.618 | 0.122 | 191.398 | 10 | 22 |
| 7 | 48 | Alex Bowman | Hendrick Motorsports Ally x Detroit Pistons Chevrolet | 37.657 | 0.161 | 191.200 | 6 | 24 |
| 8 | 5 | Kyle Larson | Hendrick Motorsports HendrickCars.com Chevrolet | 37.660 | 0.164 | 191.184 | 7 | 13 |
| 9 | 45 | Tyler Reddick | 23XI Racing Rocket League Toyota | 37.671 | 0.175 | 191.128 | 13 | 19 |
| 10 | 8 | Kyle Busch | Richard Childress Racing Kwik Trip / Kwik Star Chevrolet | 37.676 | 0.180 | 191.103 | 9 | 22 |
| 11 | 9 | Chase Elliott | Hendrick Motorsports NAPA Auto Parts Chevrolet | 37.696 | 0.200 | 191.002 | 8 | 21 |
| 12 | 16 | AJ Allmendinger | Kaulig Racing Farmsmart Chevrolet | 37.710 | 0.214 | 190.931 | 3 | 23 |
| 13 | 6 | Brad Keselowski | RFK Racing Nexilzet Ford | 37.725 | 0.229 | 190.855 | 8 | 13 |
| 14 | 17 | Chris Buescher | RFK Racing Castrol Edge Ford | 37.742 | 0.246 | 190.769 | 10 | 17 |
| 15 | 23 | Bubba Wallace | 23XI Racing Door Dash Toyota | 37.746 | 0.250 | 190.749 | 4 | 17 |
| 16 | 11 | Denny Hamlin | Joe Gibbs Racing Mavis Tires & Brakes Toyota | 37.779 | 0.283 | 190.582 | 5 | 23 |
| 17 | 7 | Corey LaJoie | Spire Motorsports Garner Trucking Chevrolet | 37.824 | 0.328 | 190.355 | 8 | 9 |
| 18 | 43 | Erik Jones | LEGACY MOTOR CLUB Allegiant Chevrolet | 37.835 | 0.339 | 190.300 | 3 | 13 |
| 19 | 99 | Daniel Suarez | Trackhouse Racing Worldwide Express Chevrolet | 37.839 | 0.343 | 190.280 | 11 | 16 |
| 20 | 22 | Joey Logano | Team Penske Shell-Pennzoil Ford | 37.860 | 0.364 | 190.174 | 13 | 17 |
| 21 | 31 | Justin Haley | Kaulig Racing LeafFilter Gutter Protection Chevrolet | 37.894 | 0.398 | 190.004 | 4 | 13 |
| 22 | 3 | Austin Dillon | Richard Childress Racing Dow Mobility Science Chevrolet | 37.895 | 0.399 | 189.999 | 5 | 22 |
| 23 | 47 | Ricky Stenhouse, Jr. | JTG Daugherty Racing Kroger / Minute Rice Chevrolet | 37.916 | 0.420 | 189.893 | 10 | 18 |
| 24 | 10 | Aric Almirola | Stewart-Haas Racing Smithfield Ford | 37.937 | 0.441 | 189.788 | 7 | 28 |
| 25 | 4 | Kevin Harvick | Stewart-Haas Racing Busch Light Peach Ford | 37.992 | 0.496 | 189.514 | 4 | 20 |
| 26 | 2 | Austin Cindric | Team Penske Discount Tire Ford | 38.033 | 0.537 | 189.309 | 3 | 10 |
| 27 | 34 | Michael McDowell | Front Row Motorsports Love's / MTS Ford | 38.045 | 0.549 | 189.250 | 2 | 18 |
| 28 | 14 | Chase Briscoe | Stewart-Haas Racing Mahindra Tractors Ford | 38.090 | 0.594 | 189.026 | 2 | 15 |
| 29 | 41 | Ryan Preece | Stewart-Haas Racing United Rentals Ford | 38.109 | 0.613 | 188.932 | 2 | 11 |
| 30 | 21 | Harrison Burton | Wood Brothers Racing Ford 20 Year Sr Master Techs Ford | 38.168 | 0.672 | 188.640 | 15 | 17 |
| 31 | 77 | Ty Dillon | Spire Motorsports Ferris Commercial Mowers Chevrolet | 38.205 | 0.709 | 188.457 | 9 | 17 |
| 32 | 42 | Josh Berry | LEGACY MOTOR CLUB Sunseeker Resorts Chevrolet | 38.221 | 0.725 | 188.378 | 4 | 19 |
| 33 | 62 | Austin Hill | Beard Motorsports Bennett Transportation Chevrolet | 38.242 | 0.746 | 188.275 | 10 | 27 |
| 34 | 38 | Todd Gilliland | Front Row Motorsports Chicago Pneumatic Ford | 38.327 | 0.831 | 187.857 | 10 | 17 |
| 35 | 51 | Cole Custer | Rick Ware Racing Biohaven / Jacob Co. Ford | 38.432 | 0.936 | 187.344 | 11 | 17 |
| 36 | 15 | JJ Yeley | Rick Ware Racing Grill Blazers Ford | 38.849 | 1.353 | 185.333 | 1 | 13 |
| 37 | 78 | Josh Bilicki | Live Fast Motorsports Zeigler Auto Group Chevrolet | 39.614 | 2.118 | 181.754 | 14 | 19 |
Here are the complete practice results for the 2023 NASCAR Cup Series FireKeepers Casino 400 at Michigan International Speedway.
2023 NASCAR Cup Series FireKeepers Casino 400 Practice Speeds
Session Info
2023 NASCAR Cup Series
Race 23 of 36
Practice Session
Saturday, August 5, 2023
Michigan International Speedway
2.000-mile oval
Brooklyn, MI
Other Sessions For This Race
10-Lap Consecutive Averages
| Rank | No. | Driver | 10-Lap avg |
|---|---|---|---|
| 1 | 24 | William Byron | 37.777 |
| 2 | 8 | Kyle Busch | 37.779 |
| 3 | 54 | Ty Gibbs | 37.806 |
| 4 | 20 | Christopher Bell | 37.815 |
| 5 | 19 | Martin Truex Jr. | 37.820 |
| 6 | 48 | Alex Bowman | 37.821 |
| 7 | 12 | Ryan Blaney | 37.863 |
| 8 | 1 | Ross Chastain | 37.901 |
| 9 | 9 | Chase Elliott | 37.915 |
| 10 | 45 | Tyler Reddick | 37.930 |
| 11 | 16 | AJ Allmendinger | 37.951 |
| 12 | 23 | Bubba Wallace | 37.995 |
| 13 | 22 | Joey Logano | 38.097 |
| 14 | 2 | Austin Cindric | 38.164 |
| 15 | 10 | Aric Almirola | 38.203 |
| 16 | 3 | Austin Dillon | 38.222 |
| 17 | 34 | Michael McDowell | 38.257 |
| 18 | 4 | Kevin Harvick | 38.293 |
| 19 | 11 | Denny Hamlin | 38.396 |
| 20 | 42 | Josh Berry | 38.462 |
| 21 | 62 | Austin Hill | 38.480 |
