Mileage

[gnxtc2]

Sooo with the OEM BFGoodrich KDW tires, I was averaging are 275 miles per tank. I know not an exact way of determining mileage but it works for me. I was driving normal...not driving over 70, no full throttle take offs.

The BF tires dried out and I replaced them with Coopers Zeons (stock size). My tank mileage jumped up to 350 miles. I thought it was odometer glitch but the tank mileage keeps repeating. Plus, I now cruise the highways 80-100 mph knowing that my tires aren't dry rotted.

I have a Lidio tune and JLT intake.

Billy T.
gnxtc2@aol.com

[1Marauder]

Wow, If this holds--these will pay for themselves!


What PSI are you running front and back?

[jmsa540]

..wow!! Very good!

[junior]

The size markings on a tire are not very accurate, typically the calculated diameter may be up to 2" more than what is actually measured. That being said, unless you could measure the diameter of the tires mounted on the car before and after, I would suspect there is a big difference. And if the old tires were bald, there would be an even bigger difference in diameter and speedo readings.

[Mr. Man]

Has to be your driving habits, or you have a mechanical issue. Both our basically stock MM's(an '03 and an '04) on OEM and other brand tires avg close to 400 miles per tank highway, a bit less combined. Don't do any real city driving only. K&N in both and a Lidio tune in one and a Mo's in the other.

[Mike D Mechanic]

Ive gotten 350-400 miles per tank from new with BFG's and Nitto's

[1Marauder]

Never been close, I either car, even when 100% freeway. Guess I drive too fast. I like the sensation of passing other cars.

[gnxtc2]

What PSI are you running front and back?

Don't even know

The size markings on a tire are not very accurate, typically the calculated diameter may be up to 2" more than what is actually measured. That being said, unless you could measure the diameter of the tires mounted on the car before and after, I would suspect there is a big difference. And if the old tires were bald, there would be an even bigger difference in diameter and speedo readings.

Won't the anti-lock/traction control be affected if the diameters were off?

Billy T.
gnxtc2@aol.com

[Bluerauder]

Don't even know.

Here's ^^^^^ part of your problem. I suspect that your calculations are out of whack. It is doubtful that tires alone would account for a 27% increase in gas mileage.

[junior]

Maybe get a handheld GPS and compare the speed it says to your speedo reading.

[RubberCtyRauder]

Don't even know



Won't the anti-lock/traction control be affected if the diameters were off?

Billy T.
gnxtc2@aol.com

T/C etc. needs a 3-6% size differential, unless you turn it off every time you start the car or have an 03 which does not have T/C

[jgc61sr2002]

I also installed coopers.
Great tire excellent value.

[ByronRACE]

30psi to 44psi on Coopers is over a 1mpg increase in flat 65mph highway driving. Repeatable. I've done it back to back on the same stretch of road in the same direction on successive trips. Air pressure matters.

[Bluerauder]

T/C etc. needs a 3-6% size differential, unless you turn it off every time you start the car or have an 03 which does not have T/C

2003 300B Marauders built October 2002 and later do have Traction Control. My '03 Marauder was built on 10 January 2003 and has T/C. It is a 300B .... #67 in Blue.