Going to 5/7

I searched all around the forum and cannot find an answer I’m currently at a 4/6 drop. I will be going to a 5/7 soon and have a tire size of 245/45/20 and was wondering do I need to roll the fender lip. Or possibly grinding some away

Will depend on your wheels backspace. Have 245/40 20 with 4.5" of backspace on the front of my 2dr Tahoe with a 5/7 drop. No problem with the fenders, but does rub on the a-arms when turned full lock.

Depends on which brand of spindles, too. BellTech & the other Co.'s using their design widen the front track by about 3/4" on each side.
McGaughy's don't.

I have DJM spindles I will put the new coils in then maybe need to trim the fender or roll the lip

Apologies. My mistake. It's the DJM spindles that don't push the wheels out.

I'm running Belltech on my Tahoe. If you were wondering.

Not sure if this helps, but my Tahoe has parts from a Beltech 4/6 drop. I have Belltech spindles. Wheels are 20x8 with 5" of backspacing. Front tires are 275-40 R20 Toyo Proxes. The wildcard on my setup is the front springs. They are from a 69 big block Camaro with some coils cut off. I have no rubbing on the front fenders or a-arms and I'm pretty sure the fenders have not been massaged. Can check in the morning. I know my rear fender well opening have been rolled.

With the cutting of the coils I am not exacly sure how much drop is up front. I know it's lower than 4" though. When I put the new front tires on the front end sat too high with the Belltech springs. I cut too much off of those and that's how I ended up with the Camaro springs. Looking at the attached picture it looks like I could lose another inch.

Nice looking ride as it is!