conisdering KF
 

Im considering this Schumacher KF or team c TM2 to replace my current buggy, cant just decide which. it will be used indoor carpet track.

Is there any common breakages on those car?

does belt drive stretch? especially with high powered brushless system ?

What upgrades are must to get?

Tm2 is solid apart from spur. Get an Rw.
Kf does appear to be a little fragile on front end hubs. Both are great cars but do drive very differently.

I have had my KF since it first came out and I have never broken anything, I also race it indoors on carpet and love it.

As for upgrades mine is straight out of the box apart from springs, shock oil, pistons and the odd 1mm washer :p