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Motorcycle lean angle: what it is and how far you really lean

By Mirko Genovese · October 23, 2026

Every rider wonders sooner or later: “How far did I lean in that corner?” Lean angle is how far the motorcycle tilts from vertical. Here is what it depends on, what is normal on the road and how it is measured.

What it depends on

In a corner the bike leans to balance the force pushing it outwards. The faster you go and the tighter the corner, the more you have to lean. In theory: tangent of the angle = speed² / (9.81 × corner radius), with speed in metres per second and radius in metres.

A few examples

  • Roundabout with a 30 m radius at 50 km/h (31 mph): about 33°.
  • Corner with a 100 m radius at 90 km/h (56 mph): about 33°.
  • Corner with a 100 m radius at 110 km/h (68 mph): about 44°.
  • These are theoretical values: tyre width and body position change the result a little.

How far riders really lean

  • In everyday riding you almost always stay below 30°.
  • Experienced riders on country roads often reach 35° to 45°.
  • With road tyres in good condition on dry tarmac the limit is around 45 to 50°; often the footpegs touch down first.
  • On track, professional racers on race tyres go beyond 60°.

Your body matters

If you shift your weight to the inside of the corner, the bike needs less lean at the same speed: that is why racers hang off. If you stay stiff or lean outwards, the bike has to lean more.

How to measure it

On track, riders use data loggers. On the road a phone firmly mounted on the handlebars is enough: its motion sensors estimate how far the bike leans. It is an estimate, not a lab measurement, but more than enough to see how you ride and how you improve.

Lean angle is not a contest

More lean does not mean better riding. Cold, dirty or wet tarmac reduces grip a lot. On public roads your safety margin matters more than any number.

Questions

What is a normal lean angle on the road?

In everyday riding you almost always stay below 30°. Experienced riders on country roads often reach 35° to 45°.

How far can you lean on road tyres?

On dry tarmac with tyres in good condition the limit is around 45 to 50°. Often the footpegs touch down first.

Can a phone measure lean angle accurately?

Mounted firmly on the handlebars it gives a reliable estimate. It is not a track data logger, but enough to follow your progress.

How do you calculate lean angle?

In theory: tangent of the angle = speed² / (9.81 × radius), with speed in m/s and radius in metres. 50 km/h in a corner with a 30 m radius gives about 33°.

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