Do I really need to change the spark plugs on my 2006 Dodge Charager at 30,000 mile ?

A "tune up" is not rquired on this engine, the computer makes al necessary adjustments, there is nothing to adjust. Possibly spark plug replacement if it's a V-6 they should be replaced at 30,000 miles the V-8 engines use iridium plugs which last about 100,000 miles, the timing belt on both engines should be replaced at 90,000 miles, replace the air filter every 30,000 and change oil and filter at 4,000 miles. I would aslo recommend cleaning the carbon out of the throttle body at around 60,000 miles to prevent low idle and stalling.

Modern spark ;ugs can easily go 50,000 miles. If you think you need new plugs, go ahead and change them out. It certainly wouldn't hurt, and it might give your horsepower and fuel mileage a little boost. I would recommend using Iridium spark plugs from either NGK or Autolite. Personally, I use E3 spark plugs. They did wonders for my old '96 4.3 GM V--6. I would also invest in a premium set of spark plug wires, Don't scrimp on the wires, they are a vital link in the ignition system. A cheap set of plug wires can cause multiple misfires which would play havoc with the on board computer.

the most important (in my opinion) is changing the transmission fluid( transmissions for those cost about $4,000.00 to replace) its supposed to be changed every 30,000 miles. ( spark plugs can last up to 100,000 miles before needing replaced.)

oil/filter/lube every 3,500 miles synthetic oils every 5,000 miles
tire rotation wheel align check balance every 7500 miles
transmission service every 30,000 miles
air filter gas filter cabin air filter evry 30,000 miles
if engine has a timing belt(rubber substance) replace every 60,000 miles if it has a metal timing chain lasts almost forever
spark plugs should be good for 75,000-100,000 miles before replacing
Spark plug wires every 50,000-60,000 miles approx.
fuel injector flush every 30-40,000 miles approx.

About 30,000 Lightyears. LOL just kidding.
I believe dodge states 30/60/90 thousand mile intervals.

once or twice a year is good for an actual tune up which is new fuel filter, plugs, plug wires, & antifreeze.
About every other year, you should replace tranny fluid and filter. Not bad idea to have coolant and tranny flushed every 2-3 years too.

1st tune (spark plugs) is 100,000 miles air and fuel filters every 30,000 miles

spark plugs at 100,000 miles,( average driving) fuel and air filter every 30,000 miles, air filter more often if driven in dusty conditions

its true.. they are recomended every 30,000 miles

I usually change the spark plugs on all vehicles every 10,000 miles.