CV Joints
 

How long can the CV joints be cracked before it has an adverse impact on the axel?

I have taken my X in for 2 different oil changes every 7.5k miles and each time they have replaced the boot cover on the drivers side. It's odd it would break right away after it was previously replaced.

What should I look for/expect to consider when it is time to have the whole assembly replaced?

Thanks

a new boot crack in 8k miles? something's wrong.

My boots were cracked for probably a year. The joints were fine and I never noticed anything wrong when driving. Still, I had both axles replaced just to be safe.

bad CV joints should cause the boot to crack.