Working with 7” tall tires and longer shocks on a Tmaxx you will have to trade off either some up swing or drop of the suspension arms. Even with custom towers it’s difficult to get the best of both. The chassis and suspension geometry was originally designed for a 5.75 inch tire, they now come with 6.3 inch tires which is just about the limit for good up and down articulation in relation to the chassis.
The biggest issue with taller than stock tires and a longer shock is the setup. When you raise the upper shock mounting location to allow the skid to hit before the shock bottoms out, the result is less suspension drop and the big possibility of binding the wheel shaft against the suspension arms or pulling the bogbone out of and/or binding the pin in the drive cup if using a cvd type wheel shaft during full compression.
Preferably you would want the tire to be able to be raised at least ¼ inch off the ground after the skid is bottomed out, but that produces an extreme angle of the suspension with 7 inch tires and binding in the drive train will almost certainly happen and the arms will then not drop much past horizontal.
If you intend to bash hard I would recommend using a tire diameter better suited for the Tmaxx suspension geometry. The truck will handle better, and you will have fewer issues with setup and breakage.
If you intend to use the tall tires you will need something custom, like an extension plate or full custom made towers.
Here’s a couple of pic’s of a custom tower I made specifically for the Ofna and UE super shocks and standard size Maxx tires (will also work with 7 inch tires).
The mounting locations are much higher than any aftermarket tower you can purchase but, you need to use limiting straps from the tower to the a-arms to prevent too much drop of the suspension arms or the wheel shafts will bind.
Full drop:
Full compression:
Limiting straps from tower to arm:
I also use a limiter system on the shock shaft between the spring retainer and the bottom of the shock to prevent too much compression/up travel of the arms which will also cause the wheel shafts to bind.
Good luck with the tall tires, there will be a trade off.
If you intend to keep/use the Super shocks I would recommend purchasing the Motherload shock part kit from UE and the Supershock spring pack. Enough springs and shock parts to make even me happy.