How much stronger are BST Carbon fiber Wheels than conventional wheels?

BST Carbon fiber wheels have undergone an intensive program of very stringent testing to verify their design and to confirm their strength and durability.

A designated test body in the UK performed the following tests and all tests were conducted on a single prototype wheel.

It is important to note that this ‘single wheel test’ is not usually the case when testing a metal wheel, since due to metal fatigue behavior of a single wheel would not last throughout all the tests. To allow for this weakness in metal wheels, the test regulations actually specify that one new wheel for every test is permissible, whereas in this case a single BST wheel withstood ALL tests. A sample of test results is given below, tests and forces exerted depend upon requirements of the testing body (eg TÜV) and the wheel (front or rear).

Cornering fatigue: 1,000,000 cycles at 530Nm
Radial fatigue: 3,200,000 cycles at 6082Nm
Torsional fatigue: 1,000,000 cycles at 890Nm
Impact test: 337.5kg from 150mm (JWL)

The front wheel was designed for a 150kg static load and the rear wheel for a 250kg static load (this translates into a bike with a total dry weight of up to 400kg). Modern sports bikes normally weigh between 160-220kg and race bikes rarely exceed 170kg, so these static load design parameters comfortably exceed normal conditions.