Grease pouring onto the inside of the wheels, vibrations around the CV axle, and clicking noises during turns are all common symptoms.
Constant velocity axles, or CV axles, are the components that transfer power from the transmission to the wheels, allowing the vehicle to move forward.
They include a flexible constant velocity joint that allows the axle to flex in a number of ways to meet wheel movement caused by turning and suspension travel.
Torn CV boots are a common reason for a car failing the MOT test, according to the MOT history check. Grease dripping within the wheels, vibrations felt around the CV axle, and clicking noises during turns are all common symptoms of torn or damaged CV boots.
This flexible joint is protected by a rubber boot known as the CV Boot. This boot is merely a dust cover for the CV joint, designed to keep dust and grime out while keeping the grease that lubricates the joint in.
When a CV axle boot fails, it exposes the CV joint to contaminants, which can cause damage.
Check MOT expiration date for your car and have the damaged CV boot replaced beforehand.