# PaceDelta

> PaceDelta compares F1 sim racing laps corner by corner against real F1 drivers and the PaceDelta community. Upload a telemetry CSV from F1 25 (exported with the Sim Racing Telemetry app), pick a track and a pro driver, and see where you gain and lose time at every corner.

PaceDelta covers all 24 tracks on the 2025 F1 calendar. Pro reference laps come from official F1 session telemetry via the FastF1 library, one fastest lap per driver, track and session (FP1, FP2, FP3, Qualifying, Race) for all 20 drivers.

Comparison modes:

- User vs Pro: your lap against a chosen F1 driver's lap at the same track.
- User vs Community: your corner metrics against community percentiles (p10, p25, p50, p75, p90).

How corners are compared: user corners are matched to pro corners by distance from the start line. PaceDelta then reports time delta per corner through the pro corner's entry-to-exit zone, plus brake point, entry speed, apex (minimum) speed and exit speed differences, with coaching notes such as "braking 115m too early".

Skill scoring: every corner you drive counts as a scored repetition. Performance is scored 0 to 100 across 8 skill nodes, criterion-referenced against pro benchmarks, not curved against other users. Tiers: Diamond 90-100, Platinum 80-89, Gold 70-79, Silver 60-69, Bronze 0-59. Nodes 1 (Braking Point Mastery), 4 (Rotation Control) and 5 (Tire Management) are live. Nodes 2 (Brake Modulation), 3 (Throttle Application), 6 (Line Precision), 7 (Racecraft) and 8 (Race Starts) are planned.

Requirements: F1 25 on PC and a force feedback wheel. Free accounts get 3 analyses per month.

## Wiki

- [Skills Overview](https://pacedelta.io/wiki): the 8-node skill tree, scoring tiers, data sources and roadmap
- [Node 1: Braking Point Mastery](https://pacedelta.io/wiki/node-1-braking): brake point recognition, accuracy and repeatability scoring with a worked Monaco example
- [Node 4: Rotation Control](https://pacedelta.io/wiki/node-4-rotation): entry, apex and exit speed against the pro V-shaped speed profile
- [Node 5: Tire Management](https://pacedelta.io/wiki/node-5-tires): degradation slope by linear regression, bootstrap, personal and hybrid scoring modes
- [Tiers & Progression](https://pacedelta.io/wiki/tiers): what each tier means, typical hours to progress, common plateaus
- [Streaks](https://pacedelta.io/wiki/streaks): 24 streak types across 8 nodes and milestone thresholds
- [FAQ](https://pacedelta.io/wiki/faq): scoring, hardware and methodology questions

## App

- [Home](https://pacedelta.io): product overview and supported tracks
- [Sign up](https://pacedelta.io/register): create a free account
- [Sign in](https://pacedelta.io/login): dashboard, upload, comparison, progress and streaks pages require an account

## Optional

- [Health check](https://pacedelta.io/api/health): API status