The only timing chain "issues" that I've heard about are on this forum. In my neck of the woods, there's not many Challengers, but a TON of RAM Hemi's running around.
Most have lived a "hard life", and the owners really like them.
This alone helped me decide on the 5.7l motor as being a "good one".
Yes, anything can happen, and that's why I bought the Chysler Lifetime Bumper to Bumper warranty. The drivetrain has the normal 5/100 coverage, and after that, the extended takes over for $100 deduct.
I'm running mine as usual, and not losing any sleep over anything on the Challenger. It's covered, and it's been a great ride for over a year now and 16k + miles
2010 Detonator Yellow
RT "Classic" A5
Front Brace. Petty
4pt Rear Brace. Mopar
Stage One Lowering Springs.
Force II Exhaust, '11 Charger Intake Tube, SRT
Air Box, BT
Catch Can and nose emblem. Mopar Hemi Orange Engine Cover,
"T" Shifter, Door Sills, Bright Pedals and Trunk Mat. Tinted windows, and custom embroidered R/Ton the Headrests.