2010 gt factory 3.73 gear question

[Gotyoumad757]

My mustang gt came with 3.73 gears from the factory. Does this mean that it was pre calibrated for speedo/odometer from the factory? I noticed my odometer seemed like it was going up rather quickly the other day. Kinda wondering about it now..

 

[stkjock]

Yes, yes it was.....


Thread Moved

 

[Boaisy]

Best first post ever.

 

[JUSTA3V]

You're here just to get people
Mad. Amirite?

 

[BruceH]

Gotyoumad? What a username. How about "Trollonyou757" or is that too obvious?

BTW What model came with 3.73 gears from Ford in 2010?

 

[06 T-RED S/C GT]

 

[richman]

This is almost as bad as reading threw those newb questions on s197 Facebook groups.

 

[Gotyoumad757]

Lol a simple yes or no would have been fine. I was asking because it seemed like my miles were going up faster than they should have. And it's a 2010 gt premium with added 3.73's.

 

[stkjock]

Lol a simple yes or no would have been fine.

no, no, it would not have been

I was asking because it seemed like my miles were going up faster than they should have.

based on what?

And it's a 2010 gt premium with added 3.73's.

added how?

 

[Gotyoumad757]

no, no, it would not have been



based on what?



added how?

This

 

[stkjock]

ok, factory optioned, then my original post stands

 

[Gotyoumad757]

ok, factory optioned, then my original post stands

And that was all I needed. And as I said, it seemed like mileage was creeping up faster than it should. I used a gps one day on my ride to work and it read .4 miles less than what my odometer read. Hence the question.

 

[Boaisy]

If you are trying to compare it to your GPS, it all depends how accurate your GPS is. Currently, the government states that most modern GPS's are accurate down to about 5 Meters (~.003 miles), but then buildings, terrain, other satellites, etc. (not counting software inconsistencies) can cause a deviation from that accuracy as well (pretty much where the .4 difference can come from).

I wouldn't bank on a GPS system to calculate actual miles. A car's computer that can compute (if programmed correctly) the wheel radius, vehicle speed, driveline ratios, etc. would be more accurate. Also, i noticed there was no mention of change of wheel or tire size, but that could open up another can of worms on this thread. If you feel something is off, a dealer can reprogram the speedo if needed.

 

[tjm73]

Lol a simple yes or no would have been fine.

Stop and think about the question you asked. Where you really thinking Ford shipped a car with a 3.73 ring and pinion and didn't calibrate the car for that ratio? I am positive that reasonably accurate speedometers are required by Federal law.

 

[Norm Peterson]

And that was all I needed. And as I said, it seemed like mileage was creeping up faster than it should. I used a gps one day on my ride to work and it read .4 miles less than what my odometer read. Hence the question.

Over how many miles? 0.4 miles in 4 miles would be significant, 0.4 miles in 40 would not.

Does your car still have original-size tires of the same make and model that the car originally came with? Worn or brand-new? On the original wheels?

In the above, I'm only looking at likely sources of odometer error. Have no clue about GPS distance measuring, only use GPS in a datalogger dedicated to track uses.


Norm

 

[Gotyoumad757]

Stop and think about the question you asked. Where you really thinking Ford shipped a car with a 3.73 ring and pinion and didn't calibrate the car for that ratio? I am positive that reasonably accurate speedometers are required by Federal law.

I did but there is always the possibility of mistakes.

Over how many miles? 0.4 miles in 4 miles would be significant, 0.4 miles in 40 would not.

Does your car still have original-size tires of the same make and model that the car originally came with? Worn or brand-new? On the original wheels?

In the above, I'm only looking at likely sources of odometer error. Have no clue about GPS distance measuring, only use GPS in a datalogger dedicated to track uses.


Norm

.4 miles in the 16 mile drive to work, one way. That would be .8 miles just daily driving to work, x5 days a week. Then however many work weeks thru out the year would add up easily. But yes it has the stock tire size 18" wheels I forget off the top of my head. Tires are brand new Mickey Thompson street comps. And it also came into consideration the gps was not entirely correct.

If you are trying to compare it to your GPS, it all depends how accurate your GPS is. Currently, the government states that most modern GPS's are accurate down to about 5 Meters (~.003 miles), but then buildings, terrain, other satellites, etc. (not counting software inconsistencies) can cause a deviation from that accuracy as well (pretty much where the .4 difference can come from).

I wouldn't bank on a GPS system to calculate actual miles. A car's computer that can compute (if programmed correctly) the wheel radius, vehicle speed, driveline ratios, etc. would be more accurate. Also, i noticed there was no mention of change of wheel or tire size, but that could open up another can of worms on this thread. If you feel something is off, a dealer can reprogram the speedo if needed.

This is what I'm banking on. Gps inaccuracy.

 

[Benwhite911]

Are you lighting up your tires on that drive to work?

 

[Gotyoumad757]

Are you lighting up your tires on that drive to work?

Lol nah. Just cruising.

 

[bujeezus]

Are you lighting up your tires on that drive to work?

Is that a trick question? Heh, heh.

 

[Sky Render]

Having tires that are a smaller diameter would cause that issue.