I have a ERBE MM2650 3s 8000mah 17/65
I blew 3 diff's in the past and just started to hear clicking in the new one that i just completely rebuild except the outer case. Im tired of running my e-revo for maybe 5-6 sessions and then it breaks the rear diff.
First the bearing broke and off centered the gears. 2nd time it stripped the gears again but didnt blow the bearings. 3rd time it blew the plantery diff cup and gears inside the diff cup. 4th (now) i have to rip it apart tonight and see that is causing it to keep breaking.

3rd time every single part inside rear diff was replace with bearings and all. only things not replaced was the diff case itself.

Would out of balance tires blow the diff?
someone please hlep

That SUCKS! I havent had any issues with my Revos drivetrain at all. Im running the 2200 on 4s and the only thing thats giving is the rear driveshafts. It keep streching the plastic where the + type metal pin is. But thats $20 to replace them on both sides every few months. I did the math and the 2650 is turning out the same RPMs as the 2200 on 4s. Im assuming the 2650 on 3s would be puttin a little less torque out aswell. Maybe your doing something wrong. ??? I don't know??? Maybe try shimming the diff. or something. Im guessing you checked/rebuilt the rear drivetrain. Would have noticed something outta place by now. I got my E Revo used, then dropped the Castle in it and Ive never had any issues yet. "Knock on Wood" But I never stripped my diffs in any kits and Ive had some really unbalenced wheels. Check out http://www.revo-world.com/forums/index.php
Thats a site dedicated to the Revo.
Good Luck gettin that fixed buddy!

hey man , i feel your pain.
i have been threw that with my savage on 6 cell lipo.

my summit shares many or the same parts in the diff and had the same type of clicking noise from the rear , it was the plastic case had cracked and would only show only a hairline crack when disassembled.

and yes if your tires are heavy from water in the foams , causeing a terrible unbalance it will be real hard on stuff.
but if they are just lightly unbalaced it shouldn't be too much of an issue.

i would try and put a real light weight set of tires with small nubs so you loose alot of the traction ... until more metal parts come out for the diffs.