Lap Comparison

How to compare laps side by side to find where you gain or lose time on track.

Lap Comparison is one of the most powerful analysis tools in Braking Lab. By comparing two or more laps side by side, you can pinpoint exactly where you’re gaining or losing time — down to individual braking zones.

Starting a Comparison

To compare laps:

  1. Open a session from the Sessions view
  2. Select the laps you want to compare (2 to 5 laps)
  3. The comparison view opens automatically

You can compare laps from the same session or across different sessions, as long as they’re on the same track and car combination.

Comparison View

Delta Bars

The delta display shows the time difference between laps at each point on track:

  • Green bars — You were faster in the selected lap
  • Red bars — You were slower in the selected lap
  • Flat line — Identical pace at that point

Corner-by-Corner Breakdown

For each corner, the comparison shows:

DataDescription
Time deltaDifference in sector/corner time between laps
MRP deltaHow brake pressure differed
Entry speed deltaSpeed difference at corner entry
Exit speed deltaSpeed difference at corner exit

This tells you not just where you lost time, but why — was it braking too early, too hard, or carrying less speed?

Available Channels

The comparison can display multiple data channels:

  • Speed — Velocity trace through the lap
  • Brake pressure — Brake application over the lap
  • Throttle — Throttle application trace
  • Lateral G — Cornering force
  • Longitudinal G — Acceleration and braking force

Saved Comparisons

Save a comparison for later reference:

  1. Set up the comparison you want to keep
  2. Click Save Comparison
  3. Give it a name (e.g., “Spa T1 improvement” or “Old vs new line”)
  4. Access it later from the Saved Comparisons list

Saved comparisons are useful for:

  • Tracking your improvement over time
  • Sharing insights with your Race Engineer AI
  • Quickly revisiting key analysis sessions

Tips

  • Compare your best and worst laps first — this reveals your biggest improvement areas
  • Focus on corners with large deltas — small deltas across many corners may be less actionable than one big deficit
  • Look at entry speed AND MRP together — a faster entry with similar MRP often means better brake point, not just more risk
  • Compare across sessions — comparing last week’s best to this week’s best shows real progress

Next Steps