Any mods while running 35s?

[Makolab]

On my 06 250, Im running 35/12.5/16s with minor rubbing on the inner fender lining. I moved the liner back and problem solved for now. Soon I will add a 2-2.5" front level kit to even the truck and for more clearance.

Since running 35s there is a decrease in towing performance as well as all around. I was planning on regearing the axles but I wanted to explore other options.

Question: Will I need to regear or do things like programmers and chips improve the performance? If so, how much better?

Thanks for your help.

[CT Performance, Inc.]

CST with Cales tunes will get it done. No need to regear