Spokes support the rim – and have an impact upon both aerodynamics and strength. Strong wheels fit for winter rides will have more spokes – for example Shimano RS 10s are fairly inexpensive wheels which have 24 spokes on the rear, and 20 on the front – they aren’t the fastest or lightest, but are reliable and will serve well on winter training rides or commutes.

Road bike wheels built to withstand greater loads, for example with touring in mind, may have a high spoke count, and they will cross where they meet the rim on both the front and rear wheel. This spoke pattern, and a high number of spokes provides added strength, but isn’t very aerodynamic – so though ideal for commuting or touring, not perfect for those after speed.

Racers wanting a wheel that gives them an aerodynamic advantage will go for a lower spoke count – this means that the wheel is a little more fragile and not very resilient to pothole damage.

The spokes will often be bladed, rather than round and on the front wheel they will run directly from the hub to the wheel, without crossing – these are called radial spokes. Shimano RS 81s, for example, have 16 bladed spokes on the front wheel and 21 on the rear.