Hi,
i want to change front tires to 245/40 on Enkei PF01SS 17x9 +60 wheel.
the car is lowered 15-20mm (2/3") and ~2 degr camber.

what mods will i need?

many many thanks !!!!

p.s. i would prefer to mess as little as possible with my fenders/tabs etc....

 

Roll your front fenders to be safe, other then that you should be good to go. Get the tires mounted and jack one corner of the rear of car to compress front suspension at one corner and look at your clearance. This will tell you if your going to have rubbing issues. You might be ok without rolling fenders if you really don't want, but run more negative camber instead.