All guides

Each guide answers one buying question and shows the figures behind the answer.

4 guides

A steel road bike with drop bars and purple-to-pink fade frame leaning on a wooden fence

How to choose

Choosing a first road bike without buying twice

Fit first, then the frame, then the parts that wear. The budget split that survives three years, and the federal requirements a new bike already meets.

Updated 11/3/2026 · 10 min

Photo: Parrot of Doom · CC BY-SA 3.0 · Wikimedia Commons

Bicycle repair tools, spanners, hammers, pliers and a hub laid out on a cloth on the ground

Budget and prices

What a bike actually costs per mile

Chain, tyres, pads, lube and a yearly service add up to about 12 cents a mile. The bike itself is usually the smaller half. Full arithmetic shown.

Updated 11/3/2026 · 9 min

Photo: Ibrahim Husain Meraj · CC BY-SA 4.0 · Wikimedia Commons

A scuffed white helmet with a white head torch and a lit red rear light strapped around it

Safety

Helmets and lights: what the rules require, and when to replace

A bike helmet meets a mandatory federal standard and is designed for one impact. What that means for replacement, and what the rules do not cover at all.

Updated 11/3/2026 · 10 min

Photo: Jim.henderson · Public domain · Wikimedia Commons

A snow-covered tree-lined street in heavy snowfall with a car driving through

How to choose

How to Read a Bike Frame Size Chart (and What It Leaves Out)

A bike frame size chart maps height to a model's frame label, but the label is not a standard. Here is what the chart is measuring, the one seat-height figure US regulation does define, and the numbers to compare instead.

Updated 11/6/2026 · 11 min

Photo: Wilfredor · CC0 · Wikimedia Commons