BikeVet Cost of Neglect
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The Cost of Neglect

Play with the numbers and see why proper maintenance and replacing your chain on time are the best investments you can make for your bike.

Your Bike & Riding Environment

Applies to both scenarios.

Component Street Prices
$
$
$
Typical Riding Conditions (Wear Multiplier)
Lubrication Type

Simulated Maintenance Strategy

Test a routine against an Optimal Benchmark (swap chain at 0.5%, lube every 200 km).

Chain Replacement Threshold
Clean & Lube Frequency

Financial Comparison

Running total of what you spend on the drivetrain for Shimano Ultegra Di2 (R8100).

Wasted due to Neglect (over 40,000 km)
-$1,120
Break-Even Distance
3,983 km
Optimal Maintenance (0.5% swap, 200 km lube) Your Simulated Strategy

Comparison Table (0 to 40,000 km)

Metric Optimal Simulated Difference
Chain Swap Interval 3,500 km 3,983 km +483 km / chain
Chains Consumed 11 chains 10 chains -1 chain
Cassettes Consumed 2 cassettes 10 cassettes +8 ruined cassettes
Chainring Sets Consumed 1 set 5 sets +4 ruined sets
Cost per 1,000 km $21.50 $62.50 +$41.00 / 1k km
TOTAL DRIVETRAIN COST $860 $2,500 -$1,640 Wasted

Edit Simulation Parameters

Tweak every wear multiplier and survival ratio.

Inspect Math
How the algorithm works

For each strategy, the engine works out how fast the chain wears from your riding conditions, cleaning frequency, and lube type, then steps through every replacement from 0 km out to the distance you picked.

Read the full methodology breakdown
Where does data come from?

Most of our multipliers and assumptions come from the work of Adam Kerin on Zero Friction Cycling.

ZeroFrictionCycling.com.au

1. Baseline & Wax

0.60 = 40% slower wear (~67% longer life)
Threshold Distance Multipliers

How much longer a chain stays on the bike past the 0.5% mark before it gets replaced.

2. Condition Wear Multipliers

How fast grit, rain, and mud chew through a chain compared to clean, dry pavement.

3. Clean & Lube Multipliers

How wear speeds up when grit stays inside the links and lube runs dry.

4. Cascade Survival (Chains)

How many chains a cassette or chainring set lasts before hooked teeth force you to buy new ones.

Rule Chains/Cass Chains/Rings
0.5%
0.75%
1.0%
Never

Why is the “Optimal Line” so hard to follow?

Swapping your chain on time and lubing regularly looks easy on a chart. In practice, most riders miss the window for three reasons:

Mental Odometer

Hardly anyone keeps an honest count of the kilometers since their last lube or chain swap.

Weather Changes the Math

Rain, dust, and mud chew through parts a lot faster than dry roads, so your chain dies sooner.

No timely alerts

Bikes don’t have a service light, and logging rides and maintenance by hand gets old fast.

Automate It with BikeVet

BikeVet tracks wear quietly in the background, so you get a heads-up before an elongated chain chews through your cassette. And it does it for every component on your bike.

  • 🔄 Syncs with Strava

    Pulls your rides automatically. No spreadsheets, no mental odometer math.

  • 🌧️ Weather Aware

    Adjusts wear rates when you ride through rain, gravel dust, or mud.

  • 🔔 Smart Reminders

    Tells you when to re-lube, when to check a component, and much more.

Free for your main bike on base components — no account required.

The alternative: Maintenance Sheet (PDF)

A one-page reference with lube and swap targets for your setup, ready to tape above your workbench.

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