November 11th, 2014
A quick glance in your CVT (continuously variable transmission) vehicle owner’s manual will reveal that many manufacturers recommend replacing or changing the belt after a given amount of belt wear, usually with the top width of the belt serving as a wear limit. This is the preferred “failure mode” of a CVT belt.
A CVT system is calibrated under a nominal belt length and belt width. Any variation to those attributes, including the stretch and wear that occurs during normal operation of the vehicle, changes the calibration and in turn the vehicle’s performance.
Typical results of belt wear and stretch includes losing top speed (under certain circumstances up to five MPH) and a decrease in shift RPM, sometimes up to 500 RPM. Typically these changes are very gradual over many miles and hours on the CVT belt, so you wouldn’t realize the gradual decrease in vehicle performance over time.
We suggest installing a new G-Force® CVT belt as part of your overall vehicle maintenance procedure. Benefits can include gaining a few MPHs, as well as increased acceleration and performance of the vehicle. G-Force installation instructions are now available online.