My Black Magnum RT has 500 miles on it now. As of today I have had no problems and found everything to be working right. No rattles/squeaks/paint problems/ or recalls, built 10/04. I took Magnum on a 250 round trip a few days ago. I was breaking in engine I did about 12-15 full throttle passes 50 mph to speed limit (HeHe) in first 200 miles I was averaging 21.5 MPH.On the last 50 miles I used speed control to see what the best MPG I could get. Set speed control on 68 MPH/RPM's was 2000/tire presure 30 psi/89 octane gas/50 degree day no wind/level instate run/my average was 25.7 MPG.

Buddy in KY

 

Thanks for the advice Buddy - It worked out just fine - check my post in the main magnum forum.

Two hours away there were a BUNCH of Magnums on Big-o's lot, 10?12? and even a Black R/T for me!

Mike

 

30PSI in the tires??? You may want to bump that. I am ASSuming you are checking them cold correct (cold means it is cold outside and they have not been driven more than 2-3 miles at low speeds). I usually set them to 40PSI warm. The TPM system will kick a light at 26PSI. That system is acurate +/- 3PSI. If you are at 30PSI warm then you are very close to the low limit. Besides the tires will handle better, wear longer, provide better MPG and "hook up" better with more air in them.

 

dodgemech
Thanks for info>>>Magnum came from dealer with 30 psi (cold) in tires>>>I checked on drivers side door and cold air pressure is 30 psi>>>I know 30 psi is for ride comfort>>>I will bump tire pressure up a few psi to 35 psi cold to see if ride comfort starts to suffer. People also ask me what octain gas I use. I use 89 octain what the manual calls for. There is only 10 cents a gallon difference in 87 and 89>>>that would be a $1.00 more per week for me to keep in full on 89 octain>>>The price of a coke>>>

Buddy in KY

 

The magnums don't have a tire pressure monitoring system.

 

They do....you may not know it's there but it is.

 

Whatever the owners manual says, or the tire manufacturer says, do that... do NOT over fill your tires to get better gas mileage as it will cause premature wear of the tires...

Fill them to what the tire manufacturer says, no more, no less... this is the most commom mistake I see people do, and the whopping .25 MPG better they MIGHT get is more than canceled out by the new set of tires they need prematurely.

 

Dodgemech,
Is the TPM system on ALL Magnums? Please clarify, THanks!

 

Yep, no more sensors on most models. Some of the LX's still use sensors. We use the ABS system to determine if there is aproblem. If one tire is rotating faster than all the others or if all the tires are rotating faster than they should be based on programmed tire size than the system knows something is wrong. Haven't played with it too much yet.

Wicked 96, the auto manufacter is NEVER right as to what tire pressure to run, they recommend a pressure that provides the best compromise of ride comfort and handling, tire wear NEVER comes into play when a manufacter is determining such things. Want evidence, ask Ford how much tire pressure the Explorer should run.......don't blame Firestone, they never told Ford running 28PSI in thier SUV tires would be OK. Accurate pressures can only be determined by actually measuring tire temp after a road test and comparing against the tire manufacters spec. All auto manufacters suggest running thier tires low, it provides for a more comfortable ride. Bumping tire pressure above the recommended pressure in the door WILL provide for better handling, better bite, IMPROVED tire life and better MPG.

BTW, I worked for Firestone for 5 years and Goodyear for 6 before spending the last decade as a DCX journeyman. I might be qualified to tire advise.

 

dodgemech, I agree whole heartedly on the tire pressure advice you give. Most Dealers/Manufacturers like to demo the car with softer tires to sell the "great ride" to their customers. The less air pressure will also cause a lot of tire roll when cornering. Many people believe that less air pressure will assist in cornering because they feel it gives the tire more grip, but the truth is the tire will give the feel of less control due to the roll of the sidewall.

PS: I run 39/lbspsi front, 38/lbspsi rear due to the weight distribution of the car.