Methodology
Learn how we collect, process, and validate golf driver fitting data to provide accurate specifications for every swing speed.
How We Collect Data
Our dataset is aggregated from three authoritative sources in the golf industry
Trackman University
Trackman is the gold standard in launch monitor technology, used by PGA Tour professionals and top fitting centers worldwide. We reference their published norms and fitting guidelines, which are based on millions of shots tracked across professional and amateur golfers. Trackman data provides baseline metrics for launch angle, spin rate, and ball speed correlations.
Visit Trackman.com →Ping Fitting Data
Ping has conducted extensive fitting research through their network of certified fitters and their proprietary nFlight software. Their data includes optimal loft, shaft, and attack angle recommendations segmented by swing speed ranges. We incorporate Ping's published fitting charts and white papers to validate our speed bucket specifications.
Visit Ping.com →MyGolfSpy Testing
MyGolfSpy conducts independent, data-driven equipment testing with real golfers across various swing speeds. Their Most Wanted Driver tests and fitting articles provide real-world performance data that complements the manufacturer and launch monitor sources. We use MyGolfSpy's published test results to cross-reference and validate our aggregated specifications.
Visit MyGolfSpy.com →Data Processing
How we calculate medians, ranges, and confidence levels
Speed Bucket Segmentation
We segment golfers into speed buckets (85 mph, 95 mph, 105 mph) based on driver swing speed. These buckets represent common amateur swing speed ranges and align with industry-standard fitting protocols. Each bucket spans approximately ±5 mph to account for natural swing variation.
Median and Range Calculation
For each metric (launch angle, spin rate, attack angle, dynamic loft, carry distance), we aggregate data from all three sources. We calculate the median value as the central tendency and establish optimal ranges based on the interquartile range (IQR) of the combined dataset. Outliers beyond 1.5× IQR are excluded to ensure data quality.
Confidence Levels
We assign confidence levels (High, Medium, Low) based on data consistency across sources. “High Confidence” indicates all three sources align within ±10% variance. “Medium Confidence” indicates two sources align with one outlier. “Low Confidence” indicates significant variance across sources, requiring further validation.
Sources
External references and data providers
- Trackman University — Launch monitor data and fitting norms
- Ping Fitting Research — Manufacturer fitting charts and nFlight data
- MyGolfSpy Equipment Testing — Independent driver testing and performance data
Disclaimer: GolfFitData is an independent data aggregation site. We are not affiliated with Trackman, Ping, or MyGolfSpy. All data is sourced from publicly available research, fitting guidelines, and published test results.
Changelog
Dataset updates and version history
Initial Dataset Published
Launched GolfFitData with aggregated specifications for three speed buckets (85 mph, 95 mph, 105 mph). Includes launch angle, spin rate, attack angle, dynamic loft, and carry distance ranges for each bucket.
Expanded Speed Buckets
Planning to add additional speed buckets (75 mph, 115 mph) and intermediate ranges to provide more granular fitting data.
Ready to Explore the Data?
View detailed specifications for each speed bucket or download the full dataset for your own analysis.