Measure your car properly.
Everything you need to know about timing 0–60s, quarter miles and roll-ons — the conventions, the accuracy questions, and how to get numbers you can trust.
How to Measure Your Car's 0–60 With Your iPhone
How to measure your car's 0–60 with an iPhone: GPS + motion fusion, a step-by-step test, rollout vs standstill, and honest accuracy limits.
Read the guide →How Accurate Is Phone GPS 0–60 Timing?
How accurate is a phone GPS 0–60 timer? What limits it, how sensor fusion fixes it, and when a £100–£300 GPS box beats an app — honest answers.
Read the guide →Time Your 0–60 Without Expensive Hardware
The cheapest way to time 0–60: GPS boxes vs OBD apps vs your iPhone. What's accurate, what isn't, and why you may not need any hardware at all.
Read the guide →What Is a 1-Foot Rollout? 0–60 Times Explained
1-foot rollout explained: the drag-strip timing convention worth 0.2–0.3s that makes manufacturer 0–60 claims quicker than a dead-stop run.
Read the guide →Quarter-Mile Times Explained: ET, Trap Speed & What's Good
What's a good quarter-mile time? ET, trap speed and ⅛-mile splits explained, with benchmarks from family cars to supercars — and how to measure yours.
Read the guide →0–60 mph vs 0–100 km/h: What's the Difference?
Is 0–100 km/h the same as 0–60 mph? Not quite: 60 mph is 96.6 km/h, so 0–100 km/h runs ~0.2s longer on quick cars. How to compare, convert and time both.
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