What do the telemetry graphs show?
Last updated: January 30, 2026
Telemetry graphs visualize your car's performance throughout the lap — speed, G-forces, and your racing line on the track map. They're like a data-driven replay that shows you exactly what your car was doing at every moment.
We extract this data from the GPS and motion sensors in your GoPro (or external GPS device), then turn it into easy-to-read charts that help you spot where you're fast, where you're slow, and where there's room to improve.
The Three Main Graphs
🚀 Speed Graph
Shows your velocity (in mph or km/h) throughout the lap.
- X-axis: Distance around the track (or time)
- Y-axis: Speed in mph/km/h
- What to look for: Sharp drops = braking zones. Flat sections = full throttle straights. Gradual climbs = corner exits.
⚡ G-Force Graph
Shows how hard you're cornering (lateral G) and braking/accelerating (longitudinal G).
- X-axis: Distance around the track (or time)
- Y-axis: G-force magnitude (positive = acceleration/right turn, negative = braking/left turn)
- What to look for: Higher peaks = harder cornering or braking. Smooth curves = smooth driving. Jagged lines = abrupt inputs.
🗺️ Track Map
Shows your racing line from a bird's-eye view, with color-coded speed overlay.
- Color Coding: Red/orange = slow corners. Yellow/green = mid-speed. Blue/purple = high speed.
- What to look for: Are you using all the track? Where do you brake (color change)? Is your line consistent lap-to-lap?
How to Read the Graphs
All graphs share the same X-axis (distance or time), so they're synchronized — if you hover over a point on the speed graph, you'll see the corresponding G-force and track position at that exact moment.
| Graph Element | What It Means |
|---|---|
| High Speed Peak | You're flat-out on a straight or fast corner |
| Sharp Speed Drop | Braking zone before a corner |
| Gradual Speed Increase | Corner exit — getting back on the throttle |
| High Lateral G | Fast corner — you're loading the tires hard |
| High Longitudinal G (negative) | Heavy braking |
| High Longitudinal G (positive) | Hard acceleration |
| Jagged Lines | Abrupt inputs — maybe trail-braking or correcting the car |
💡 Pro Tip: Look for places where your speed drops unexpectedly — not in braking zones, but mid-corner or on straights. Those are often where you're lifting off the throttle when you shouldn't be, costing you valuable time.
Common Patterns to Spot
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Early Braking: If your speed drops before a corner when comparing to a faster lap, you might be braking too early.
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Slow Corner Exit: If your speed climbs slower than a reference lap, you're getting on the throttle too late or too gently.
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Mid-Corner Lift: A small speed dip mid-corner (not at braking) suggests you're lifting off the throttle — maybe from understeer or lack of confidence.
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Low G-Force in Fast Corners: If your lateral G is lower than expected in a high-speed corner, you might not be committing to the turn — try carrying more speed.
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Wide Racing Line: Track map shows you're not using the full width of the track — missing apex or running wide on exit.
Comparing Telemetry Between Laps
When you use the Head-to-Head comparison, telemetry graphs overlay both laps so you can see differences directly:
- ✅ Lap A in Blue: Your reference lap (usually your fastest)
- ✅ Lap B in Orange: The lap you're comparing against
- ✅ Shaded Regions: Highlight where one lap was significantly faster
This makes it super easy to pinpoint exactly where the time difference came from — no guessing, just data.
🏁 Real Example: A driver noticed their speed was 5 mph lower through Turn 3 compared to their best lap. By watching the video + telemetry, they realized they were braking 10 meters earlier. Next session, they braked later and picked up 0.3 seconds in that sector alone.
What If My Telemetry Looks Wrong?
If your graphs show unexpected spikes, gaps, or inconsistencies:
- ❌ No GPS Lock: GoPro didn't acquire GPS before you started the lap. Make sure GPS is locked (blinking icon on screen) before recording.
- ❌ Obstructed View: GPS signal was blocked (tunnels, dense trees, tall buildings). Not much you can do except avoid those areas.
- ❌ Camera Movement: If the GoPro moved or fell during the lap, G-force data will be skewed.
Note: We smooth out minor GPS noise automatically, but if the data quality is too poor, some graphs may show gaps. This is normal for older GoPro models or tracks with GPS challenges.
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