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GUIDES ·19 guides · F1 25 · Assetto Corsa

Guides: telemetry for sim racers and F1 fans

How sim racing telemetry works, how to read it, and how to turn it into lap time — for anyone racing at home on any rig, from a controller to a direct-drive cockpit, and for F1 fans who want to understand what they are watching. Every guide is written against how StintLab actually behaves, and its worked examples are computed by StintLab's own analysis code.

START ·Four ways in

Where to start

Racing at homeYou have a rig — any rig, from a pad to direct drive — and want to know what your laps are telling you.
  1. Sim racing telemetry
  2. Your sim rig, measured
  3. Get faster at sim racing
New to telemetryYou watch F1 and want to understand the graphics — or you have just started sim racing.
  1. How to read F1 telemetry
  2. F1 sector times explained
  3. Telemetry glossary
Setting upYou have F1 25 on a PC and want every lap recorded, tonight.
  1. F1 25 telemetry settings
  2. F1 25 telemetry, explained
  3. Compare two laps
Getting fasterYou have laps on disk and want to know what to practise.
  1. How to get faster in F1 25
  2. Chase a target lap
  3. Lap time consistency
SIM RACING ·3 guides

Sim racing

For anyone racing at home, on any rig: what telemetry is, what your pedals and upgrades are really doing, and a method for getting faster.

Sim racers on any rig · 12 minSim racing telemetryWhat telemetry is, what each channel tells you, how games send it, which games StintLab reads, and what to look at first.Home rig owners · 11 minYour sim rig, measuredWhat your throttle and brake traces say about pedal calibration, and how to tell whether an upgrade made you faster — any rig, from a pad to direct drive.Sim racers who want to be quicker · 13 minGet faster at sim racingWhere the time usually is, why consistency comes before pace, a practice session that works at home, and how to measure every step.
SET UP ·2 guides

Set up

Get telemetry out of the game and onto your disk, and know what is in it.

F1 25 on PC · 9 minF1 25 telemetry settingsEvery setting in the game's Telemetry Settings menu, what it does, what to set it to, and how to fix a setup that records nothing.F1 25 players · 11 minF1 25 telemetry, explainedThe packets F1 25 broadcasts, the channels inside them, and how a stream of numbers becomes a lap you can compare, metre by metre.
FIND TIME ·6 guides

Find time

Where the lap time is, how much, and what to practise — measured, not guessed.

F1 25 players · 12 minHow to get faster in F1 25Six steps: a baseline, the time you already own, a faster target, a diagnosis, a drill for each section, and a re-measure that tells you whether it worked.F1 25 and Assetto Corsa players · 11 minCompare two lapsTwo laps on one distance axis, the delta line that says where the gap opens, and a worked example where 1.317 seconds splits into three corners.F1 25 players · 11 minBraking pointsWhat a braking zone is in the data, the seven numbers that describe one, and why a later brake point is not automatically a better one.F1 25 players and F1 fans · 10 minTheoretical best & optimal lapYour best sectors added up, the same idea every 100 metres, and the rules that stop either number from flattering you.F1 25 players, coaches and teammates · 11 minChase a target lapPick a faster lap, get the gap every 100 metres and up to three sections to practise — with the evidence and the drill for each.F1 25 players and league racers · 10 minLap time consistencySpread, typical lap, the sector that leaks, and the corner whose brake point wanders — measured, and turned into a plan.
RACE & SEASON ·2 guides

Race & season

Fuel, tyres and the long view: is any of it working?

F1 25 players and F1 fans · 11 minFuel, tyres & pit stopsFuel per lap, tyre wear per wheel and every pit visit, lap by lap — and how to turn them into a fuel load and a stint plan.F1 25 and Assetto Corsa players · 9 minTrack your progressEvery session as one record: time on track, bests per circuit, and an improvement figure that will not count a faster car as progress.
FOR F1 FANS ·3 guides

For F1 fans

The graphics you see on the broadcast, explained — and read from your own laps.

F1 fans and new sim racers · 12 minHow to read F1 telemetryThe traces behind every broadcast comparison — speed, throttle, brake, gear, delta — read corner by corner, the way an engineer does.F1 fans and F1 25 players · 9 minF1 sector times explainedWhy a sector turns purple, what green and yellow mean, and how best sectors add up to the lap you have already driven.F1 fans and sim racers · 14 minTelemetry glossaryDelta, apex, trail braking, out-lap, MFD, UDP and the rest — each in a sentence or two, with a link to where it matters.
BY DRIVER ·3 guides

By driver

The same tools, for the way you race.

F1 25 league racers · 10 minLeague racing prepRace pace over one-lap pace, fuel and tyre numbers for your league's distance, and lap files your teammates can chase.F1 25 players on a gamepad · 9 minController playersWhat a pad does to your throttle and brake traces, which assists are matched and which you must keep level yourself.Assetto Corsa players · 8 minAssetto Corsa telemetryNothing to switch on: how Assetto Corsa's shared memory is read, what each lap records, and what it cannot.
PIT LANE ·StintLab 2026 edition

Read your own laps like this.

StintLab records every lap you drive in F1 25 and Assetto Corsa on your own Windows PC and builds the charts on this page from them — the overlay, the braking table, the practice plan, the season record.

  • $19.99 USD, once — no subscription
  • No account, nothing uploaded, no licence server
  • Windows 10 & 11, F1 25 (both formats) and Assetto Corsa