Rolling Resistance (Crr) Calculator - Quantify Tire Friction & Watts Saved
Calculate exact power consumed by tire casing drag across smooth tarmac, chip-seal, and gravel surfaces using BRR laboratory data.
How to Use Tire Crr Calculator in 3 Simple Steps
Step 1: Upload
Drag & drop your .FIT, .GPX, or .TCX activity file. All processing is 100% private in your browser.
Step 2: Process
FitCrop inspects telemetry streams, removes anomalies, recalibrates metrics, or fixes binary checksums.
Step 3: Export
Download your clean Strava, Garmin, and Zwift compatible file with 1 click. Zero server wait.
Frequently Asked Questions
How many watts do latex tubes save compared to standard butyl?
Latex inner tubes save approximately 4 to 7 Watts per wheel at 35 km/h compared to standard thick butyl tubes.
What is the rolling resistance coefficient (Crr)?
Crr is the dimensionless ratio of the force needed to roll a tire forward over normal gravitational load.