I have had my Mazda 3 GT 07 model for a little more than two years now.

Never had any problems, tire rotation and maintenance every 8k.

Just had my tires changed coz they were worn out. Got nice set of v12 hankooks.

Did my first alignment.

And now two months later I noticed while driving on a highway 100km/h or faster when I am pressing breaks my steering wheel starts wobbling.

Did diagnostics today and I was told that it's time to change front break pads and the rotors coz they are 2.35 I think inch in width instead of 2.45
They lost me there... Correct me if I am wrong with measurements.

Anyway, I never heard anyone changing rotors together with the break pads...

Changing front rotors and set of pads is gonna cost me 500$

Should I do it or changing the pads should be enough to get rid of that wobble ?

Thanks for your help.