What to Log Before and After Every Track Day
Track days are hard on cars. That’s the point. But the difference between someone who tracks reliably for years and someone who grenades an engine in their second season usually comes down to preparation and record-keeping.
This isn’t a “how to drive on track” post. This is the boring-but-critical stuff: what to check before you load up, what to inspect when you get home, and why writing it all down matters more than you think.
Before the track day
Do this the evening before or the morning of — not in the paddock while your run group is lining up.
Fluids
- Engine oil — Check level and color. If you’re within 500 miles of your next change, do it now. Track driving is the hardest thing you can ask of your oil. Top off if needed and note the level
- Brake fluid — Should be clear to light amber. If it’s dark or you can’t remember the last flush, flush it. Boiled brake fluid on a hot lap is a bad day
- Coolant — Full in the reservoir, no leaks. Check the cap seal while you’re at it
- Power steering / transmission — Quick check. You’re looking for anything obviously low or leaking
Tires and wheels
- Tread depth and condition — Look for cracks, bulges, uneven wear. If a tire is marginal, it’s not a track tire
- Cold tire pressures — Record them. You’ll adjust hot pressures at the track, but you need a cold baseline to compare against. Note what you set them to before your first session
- Lug nut torque — Torque wrench, spec value, every wheel. This is non-negotiable
Brakes
- Pad thickness — Measure or visually inspect through the wheel. If you’re under 4mm, bring spares or swap before you go
- Rotor condition — Look for deep grooves, cracks, or heavy lip. Note the condition so you can compare after
Everything else
- Remove loose items — Floor mats, phone mounts, water bottles, anything in the trunk that can become a projectile
- Check for leaks — Look under the car. Fresh oil or fluid on the garage floor is a sign to investigate, not ignore
- Note your mileage — Write it down. You’ll want to know how many track miles you put on between services
OBD-II scan
If you have an ELM327 Bluetooth adapter, plug in and check your baseline readings — coolant temp, battery voltage, RPM at idle, fuel level. If something feels off after the track day, you’ll want to know what “normal” looked like before. TechSheet logs these automatically when you connect.
After the track day
Do this the same day or the next morning. The longer you wait, the more you forget.
Fluids again
- Engine oil — Recheck level. Track driving burns oil that street driving won’t. A noticeable drop might be normal for your car, or it might not — but you need to know the trend
- Coolant — Check the reservoir. If it’s low, figure out where it went
- Brake fluid — Look at the color again. If it darkened significantly over one day, your fluid is cooked and needs a flush before the next event
Brakes
- Pad thickness — Measure again and compare to your pre-track numbers. Now you know your wear rate per track day, which tells you exactly when to budget for new pads
- Rotor condition — Look for new cracks or scoring. Minor heat spots are normal. Cracks are not
- Pedal feel — Soft or spongy? Could be air in the lines from boiling fluid
Tires
- Pressures — Let them cool fully, then record. Compare to your pre-track cold numbers
- Wear patterns — Inside edge wear suggests you need more camber or you’re overdriving the fronts. Graining or blistering tells you about your pressures and driving style. Take photos
Inspect and log
- Look for new leaks — Oil, coolant, brake fluid, anything. Check under the car and in the engine bay
- Log every issue while it’s fresh — That slight vibration under braking in session 3? The weird noise on the back straight? Write it down now. In a week you won’t remember the details
- Note next maintenance due — Based on what you saw, decide what needs to happen before the next event. Schedule it
Why any of this matters
Keeping a log isn’t just for the organized among us. It’s practical:
- Catch problems early — A trend of dropping oil level tells you something before the engine does. Tracking brake pad wear tells you exactly when you’ll need pads, not a rough guess
- Warranty and insurance — If you ever need to make a claim, documented maintenance history is the difference between coverage and denial
- Resale value — A complete service history with track day logs included is worth real money when you sell. Buyers pay more for cars with documented care
- Know your baseline — You can’t notice something is wrong if you don’t know what normal looks like
Making it easy
This is the kind of logging that falls apart when it’s inconvenient. A spreadsheet works until you can’t be bothered to open your laptop after a long day at the track. A notes app works until your entries become unreadable shorthand.
I built TechSheet specifically for this — you can read more about it in the full TechSheet overview. Log service entries with mileage, costs, and photos right from your phone. Set maintenance reminders based on mileage or time. Scan OBD-II codes with any ELM327 Bluetooth adapter. Generate a full service history PDF when you need one.
It’s free for one vehicle. If you have multiple cars or want OBD-II support, TechSheet Pro is $4.99/month or $39.99/year.
Your track car deserves better than a glovebox full of crumpled receipts.