BoP Lab / Drivers / Roy Lipner
| Track | Class | Sessions | Typical gap to class best | Closest |
|---|---|---|---|---|
| Road America (4.05 mi) | T1 | 8 | +4.540s (3.19%) | +0.000s (0.00%) |
| Road America | T1 | 1 | +0.000s (0.00%) | +0.000s (0.00%) |
Gap is the driver's best lap in a session against the fastest lap in their class in that same session (zero is fastest in class), shown as time lost and as a share of the lap, so conditions cancel out and tracks can be compared. Typical is the median session.
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| June Sprints 2026 | Grp 8 GT1 GT2 GTX T1 AS Race 2 | T1 | 175 | BMW M4 | 1/3 | 2:23.679 | 2:23.679you | +0.000s (0.00%) | 152.02/3 | 152.8Richard Grant | -0.9 mph (-0.6%) |
| June Sprints 2026 | Grp 8 GT1 GT2 GTX T1 AS Race 1 | T1 | 175 | BMW M4 | 1/3 | 2:22.894 | 2:22.894you | +0.000s (0.00%) | 152.51/3 | 152.5you | +0.0 mph (0.0%) |
| June Sprints 2026 | Grp 8 GT1 GT2 GTX T1 AS Qual 2 | T1 | 175 | BMW M4 | 1/4 | 40.477 | 35.930David Marshall | +4.547s (12.66%) | 151.12/4 | 155.1Richard Grant | -4.0 mph (-2.6%) |
| June Sprints 2026 | Grp 8 GT1 GT2 GTX T1 AS Qual 1 | T1 | 175 | BMW M4 | 1/3 | 32.310 | 32.310you | +0.000s (0.00%) | 150.62/3 | 151.4David Marshall | -0.8 mph (-0.6%) |
| June Sprints 2024 | Grp 6 GT1 GT2 GT3 GTX T1 AS Race 2 | T1 | 20 | BMW M4 GT4 | 6/9 | 2:31.077 | 2:21.723Mark Boden | +9.354s (6.60%) | 145.04/9 | 150.3Mark Boden | -5.3 mph (-3.5%) |
| June Sprints 2024 | Grp 6 GT1 GT2 GT3 GTX T1 AS Race 1 | T1 | 20 | BMW M4 GT4 | 10/10 | 4:26.873 | 2:36.516Mark Boden | +110.357s (70.51%) | 128.03/10 | 148.9Garry Crook | -21.0 mph (-14.1%) |
| June Sprints 2024 | Grp 6 GT1 GT2 GT3 GTX T1 AS Qual | T1 | 20 | BMW M4 GT4 | 5/10 | 2:26.677 | 2:22.137Mark Boden | +4.540s (3.19%) | 151.13/10 | 151.7Hugh Stewart | -0.6 mph (-0.4%) |
| June Sprints 2024 | Grp 6 GT1 GT2 GT3 GTX T1 AS Prac | T1 | 20 | BMW M4 GT4 | 8/10 | 2:35.903 | 2:22.425Mark Boden | +13.478s (9.46%) | 151.71/10 | 151.7you | +0.0 mph (0.0%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| June Sprints 2026 | Grp E | T1 | 175 | BMW M4 | 1/1 | 2:24.734 | 2:24.734you | +0.000s (0.00%) |
#39542 from Roy Lipner · Rule change · TB 26-03 (2026-03 Fastrack)
In T1 GT4 Spec Lines, Spec Line 4030-, add to Chassis Notes the following:
"Wagner Tuning # 200001124 Intercooler allowed."
#39532 from Roy Lipner · Not recommended · Minutes (2026-02 Fastrack)
The Runoffs probation rules were established to ensure that a driver winning a class that experiences a one-year dip in Runoffs
event participation would not be penalized for a potential anomaly. A second year below the 10-car threshold is indicative of a
trend or more significant issue. The CRB believes that adjustments made to Touring 1 set it up for success in 2026, where it will
again be included at the Runoffs in a combined group with GT-1. The GCR stipulates that if the class reaches 10+ cars at the
Runoffs, it will move off of probation and crown a National Champion.
#39463 from Roy Lipner · No action required · Minutes (2026-01 Fastrack)
The GT4 cars in T1 have the option to use either Pirelli or Michelin tires if they are using non-DOT approved racing slicks. We
have also allowed T1-GT4 cars to use any DOT approved race tire conforming to the size shown in the spec line.