The reference library
Car Performance Guides
Find the right numbers for each calculator and learn how to compare model estimates with measured runs.
Available guides
Timing a run
How to Measure 0–60 Time
Record a baseline you can use again. The timing method, vehicle setup, and surface all matter when you compare runs.
Read guide Planning an upgradeHorsepower vs. Weight for 0–60 Acceleration
More horsepower and less weight both improve power-to-weight. Convert each change to the same ratio to compare the options.
Read guide Preparing for the stripCurb Weight vs. Race Weight
Start with the weight that matches the question. Use curb weight for the 0–60 model and the as-run weight for a quarter-mile pass.
Read guide