Enter the wheelbase length and the turning angle of the front wheels into the calculator to determine the turning radius.

## Turning Radius Formula

The following formula is used to calculate the turning radius of a car.

TR = WB/tan(a)

- Where TR is the turning radius
- a is the angle of the turn
- WB is the wheelbase (distance between centers of the front and back wheels)

This formula assumes a perfect theoretical turning scenario. In real-world situations, this turning radius would vary depending on wheel tilt, friction, and many other factors.

## Turning Radius Definition

**What is a turning radius? **A turning radius is a radius at which a car will rotate, or turn, given a certain wheelbase length and an angle of turn of the wheels.

## Example Problem

How to calculate a turning radius?

**First, determine the wheel base.**This is the distance from the centers of the front and back wheels. For this example, the wheelbase is found to be 5 ft.

**Next, determine the turn angle.**This is the angle at which the front wheels are turned from their neutral position. in this problem, the angle of turn is 10 degrees.

**Finally, calculate the turn radius.**Using the formula, the turn radius is found to be: 5/tan(10)= 28.356 ft.

## FAQ

**What is a good turning radius? **Most common cars have a turning radius of 35′ so anything smaller than that would be considered good. This is the turning radius of the car assuming the wheels are turned as much as possible.

**Do bigger tires affect the **turning radius? Typically larger wheels will increase the turning radius of a vehicle to more wheel tilt during turning.

**Is a smaller or larger turning radius better? **A smaller turning radius is better for handling and cars that want to perform well on a track will want to try to decrease the turning radius as much as possible.