When the result file includes per-lap data, Charts and Lap Data tabs appear. They are available for Race, Qualifying, and Practice sessions.
Charts tab
Interactive charts plot your session over laps or distance.
Chart catalog
| Chart | Description |
|---|---|
| Position change | Running class or overall position lap by lap (not shown for Practice) |
| Gap to … | Race-only gap chart with a driver picker — see below |
| Lap time progression | Lap times across the stint |
| Sector times | Sector splits when available |
| Fuel level | Fuel remaining and used per lap |
| Tyre wear | Wear by tyre (FL, FR, RL, RR) when exported |
| Virtual energy | Energy remaining and used per lap |
| Top speed | Speed peak per lap |
Not every chart appears for every session — only when the underlying data exists in the file.
Gap to driver (Race)
On Race sessions with gap data, Charts includes a Gap to … plot with its own driver dropdown. This is separate from Rival Comparison on Standings:
- Pick any other driver (or team entry) in your class in multiclass races
- Defaults to the class winner when you have not picked someone
- Gap is computed at sector checkpoints, not only at the end of each lap
- Positive gap (red in the tooltip) means you are behind; negative (green) means you are ahead
- Use the zoom presets (15s, 30s, 60s, 120s, or Full) to focus on close battles
For the class-leader gap chart under the Standings grid, see Standings & Rivals.
Chart controls
Fine-tune what you see:
| Control | Purpose |
|---|---|
| Lap range brush | Drag on a chart to zoom to a lap range |
| Invalid lap toggle | Include or exclude invalid laps |
| Outlier threshold | Hide extreme lap times from averages |
| Manual lap exclusions | Exclude specific laps from analysis (click points on lap-time charts) |
Use these to focus on a clean stint or ignore in/out laps and anomalies. The brush applies across charts that support it, so a range you set on one chart stays useful when you scroll to another.
Rival comparison on charts
Add up to two rivals from Standings → Compare / Compare Team. A Rival Comparison bar pins to the bottom of the page while comparison is active. MyLMU then loads those drivers’ lap data and overlays them on supported charts.
Charts that overlay rivals
| Chart | What you see |
|---|---|
| Position change | Your line plus each rival’s class/overall position |
| Lap time progression | Side-by-side lap times for the same lap numbers |
| Sector times | Rival S1 / S2 / S3 as additional series (often dashed) |
| Top speed | Rival peak speed per lap |
| Fuel | Rival remaining and used series when fuel data exists |
| Virtual energy | Rival remaining and used series when VE data exists |
| Tyre wear | Rival FL / FR / RL / RR wear series when wear data exists |
Gap to … does not auto-switch to your selected rivals — use its dropdown if you want a gap plot vs a specific driver. You can compare rivals for overlays and still point Gap to … at someone else (for example the class leader).
How to read overlays
- Match series by color and name in the legend / tooltip — your line stays primary; rivals use distinct colors
- Hover a lap for every series’ value at that lap
- Brush a short lap range when the battle was close, then open Lap Data for the same laps’ numeric deltas
- Pit-entry markers (when present) help you ignore in/out noise while comparing stints
Limits and gaps
- Comparison is by lap number (your lap 12 vs their lap 12), not by wall-clock time
- If a rival DNF’d earlier or missed a lap, that lap has no point for them
- In driver swap sessions, position and some resource charts follow the car / team entry. Prefer Compare Team when you care about the whole entry; individual stint resource data may only exist while that driver was in the car
- Remove a rival from the bottom bar (or clear all) to return to solo charts
Driver swap limitations
In driver swap sessions, position and some resource charts reflect the car entry, not individual drivers. Tyre wear, fuel, virtual energy, and top speed charts may be incomplete or missing — often only for laps you drove in the uploaded file, not your co-driver's stints. See Driver Swaps & Data Gaps.
Lap Data tab
The Lap Data table lists every lap in a sortable grid.
Typical columns
| Column | Description |
|---|---|
| Lap | Lap number |
| Lap time | Total lap time |
| Sectors | S1, S2, S3 splits |
| Fuel | Fuel remaining or used |
| Compound | Tyre compound for the stint |
| Events | Pit in/out, incidents, flags |
Click column headers to sort — find your fastest laps, identify where time was lost, or compare in-lap vs out-lap.
Rival comparison on Lap Data
When rivals are active, the table title notes how many drivers you are comparing. Your row values stay primary; under each comparable cell, MyLMU shows a delta per rival for the same lap number.
Columns with deltas
| Metric | Delta meaning |
|---|---|
| Lap time and S1 / S2 / S3 | Rival time − your time (seconds) |
| Position | Rival place − your place (places) |
| Top speed | Rival peak − your peak |
| Fuel used / remaining and VE used / remaining | Rival − you on that quantity |
| Tyre wear (FL, FR, RL, RR) | Rival wear − your wear |
Compound (and similar non-numeric labels) stay unchanged — no delta under those cells.
Colors and signs
- Green — you are better on that metric for that lap
- Red — the rival is better
- Muted / equal — values match (or the difference is effectively zero)
- — — rival has no usable value for that lap/metric
For times, usage, wear, and position, lower is better, so a positive delta (rival higher) usually means you gained. For top speed and remaining fuel/VE, higher is better, so a negative delta (rival lower) usually means you are ahead.
Hover a delta to see which rival it belongs to when two rivals are active.
Incomplete rival data
- Missing rival data for a lap shows as —
- Incomplete rival sectors may be filled from the session report the same way as your own invalid laps when possible
- Multiclass position deltas use class position when the session is multiclass
- Fuel and virtual energy deltas use the same percentage-style values as the charts (not raw tank units), so chart and table stay aligned
Remove rivals from the Rival Comparison bar at the bottom to return to the solo table.
Finding gain and loss
- Sort by lap time to see best and worst laps
- Compare sector columns on adjacent laps to spot which sector changed
- With rivals active, scan green/red deltas down a stint to see where you gained or lost vs a driver
- When two rivals are active, compare their two delta rows under the same cell to see who you beat on that lap
- Cross-check with Race Director for incidents on the same lap number
- Brush the lap range on Charts, then inspect those laps in the table
Data gap banner
When tyre wear, fuel, and virtual energy are all missing from the file, a banner appears:
Tyre wear, fuel & energy data unavailable
Lap times and sectors may still be present. The banner explains that some columns will be empty — not a MyLMU bug, but missing export data from the game.
This banner most often appears on multiplayer sessions without driver swaps. In driver swap sessions, resource data is usually exported only for laps while you were driving, so the banner may not show even when co-driver stints are empty. Similar gaps can appear after DNF, DQ, or None when LMU stops streaming after you leave the server. See Driver Swaps & Data Gaps.
Linking to telemetry
Charts and lap data come from the session result XML. For throttle, brake, steering, and GPS at full resolution, link telemetry and open the file in the Telemetry Viewer.
Related
- Race Stats & Director
- Standings & Rivals
- Driver Swaps & Data Gaps
- Performance analytics — trends across many sessions