NASCAR iRacing Class B Series Series - 2025 Season 4

logo for NASCAR iRacing Class B Series
2025 Season 4 - Races every 2 hours on the hour
The NASCAR iRacing Class B Series features the NASCAR XFINITY Chevrolet Camaro, Ford Mustang, and Toyota Supra stock cars as raced in the NASCAR XFINITY Series, with multi-car fields running the same schedule of short, intermediate and speedway ovals as the "open" Class B series.

The series employs an open setup format, allowing competitors to squeeze those extra tenths out of their lap times with the right adjustments. Slightly narrower and with different aerodynamic characteristics compared to its Class A counterpart, the Class B cars are the perfect intermediate step between the NASCAR Craftsman Truck Series machinery and the Class A NASCAR Cup Series Next Gen cars.

Overview

  • Category: Oval (1)
  • Track Types: oval
  • License Group Types: 4
  • Car Classes: [1455]
  • Car Types: chevy, classb, nascar, nationwide, oval, xfinity
  • Allowed Licenses: Class C 4+, Class B, Class A, Pro, Pro/WC
  • Allowed Season Members:

Schedule

Week Track Duration Summary Weather
Week 1
(Nov. 4, 2025)		 Homestead Miami Speedway Oval
(2025-03-01T12:45:00 1x ) 		No. Of Laps: 90
  • Start Type: Rolling
  • Start Zone:
  • Temp: 24.8 to 25
  • Wind 19.2 to 19.4
  • Dir 4
  • Skies 0 to 0
  • Rain 0 (0 %)
  • None
Week 2
(Nov. 11, 2025)		 Dover Motor Speedway
(2025-05-15T12:40:00 1x ) 		No. Of Laps: 110
  • Start Type: Rolling
  • Start Zone:
  • Temp: 21.9 to 22.8
  • Wind 21.1 to 21.3
  • Dir 1
  • Skies 1 to 1
  • Rain 0 (0 %)
  • None
Week 3
(Nov. 18, 2025)		 EchoPark Speedway (Atlanta) Oval - 2008
(2024-05-15T13:05:00 1x ) 		No. Of Laps: 90
  • Start Type: Rolling
  • Start Zone:
  • Temp: 21 to 21.6
  • Wind 20.1 to 21.4
  • Dir 7
  • Skies 2 to 2
  • Rain 0 (0 %)
  • None
Week 4
(Nov. 25, 2025)		 Auto Club Speedway Oval
(2024-05-15T12:00:00 1x ) 		No. Of Laps: 65
  • Start Type: Rolling
  • Start Zone:
  • Temp: 19.4 to 19.4
  • Wind 22.7 to 26.6
  • Dir 6
  • Skies 1 to 2
  • Rain 0 (0 %)
  • None
Week 5
(Dec. 2, 2025)		 Chicagoland Speedway
(2025-04-01T13:10:00 1x ) 		No. Of Laps: 90
  • Start Type: Rolling
  • Start Zone:
  • Temp: 20.5 to 21.3
  • Wind 8.3 to 9
  • Dir 6
  • Skies 0 to 1
  • Rain 0 (0 %)
  • None

Configuration

  • Official
  • Rookie
  • Season
    2025 S4
  • Regional Comp.
  • Race Week
    0 (0)
  • Drop Weeks
    0 of 5
  • Multi Class
  • Fixed Setup
  • Drivers
    1 <> 1
  • Cross License
  • Driver Changes
  • Pit Lane Crashes
  • Incident Limit
    27
  • Warn Mode
    2
  • Warn Param 1
    14
  • Warn Param 2
    8
  • Caution Types
    3 /
  • Caution Laps Count
  • GW Checkered Limit
    3
  • Lucky Dog
  • Conduct Rule Mode
    0
  • HardCore Level
  • Car Switching
  • Start on Qual Tyre
  • Short Parade Lap
  • Start Zone
  • Qualifier Starts
  • Heat Racing
  • Num Opt Laps
    0
  • OP Duration (mins)
    120
  • Send to OP.
  • Ignore OP License.
  • OP Session Type.
    170
  • Starters
    6 <> 28
  • Grid By Class
  • Active
  • Complete
  • Diff. Race Tyres
  • Super Sessions
  • Member Restriction
  • Car Restriction
  • View Restriction
  • Start
    2025-11-04… (66)