Could I have the wrong speedometer gear?

[Lou]

All you need to do is make sure you orient the housing correctly when you reinstall it. Otherwise, your speedo will now be accurate so your calculated MPG will be accurate.

 

[Jerry Bransford]

It will just give you a more correct albeit slightly lower mpg. That's because the 36 tooth speedo gear caused the odometer and speedometer to incorrectly indicate you were driving faster and further than you really were.

 

[Mora]

It will just give you a more correct albeit slightly lower mpg. That's because the 36 tooth speedo gear caused the odometer and speedometer to incorrectly indicate you were driving faster and further than you really were.

I’m interested to see what my actual MPG is... what kind of MPG do you usually get on 35s and 4.88 gearing?

 

[Lou]

That varies greatly depending on your highway speed.

 

[Mora]

That varies greatly depending on your highway speed.

Guess we'll just have to see when I change the speedometer gears

 

[dbbd1]

If you were only 3 mph off, you may not want to move right up to a 39t. You may swing too far the other way.

 

[pagrey]

If you were only 3 mph off, you may not want to move right up to a 39t. You may swing too far the other way.

Based on the numbers given 39 is perfect as far as the math goes. The 39 will adjust it just over 5 at 70 which is exactly what was reported.

 

[scottgraham]

Carpet:
https://www.amazon.com/dp/B01FQHG3IO/?tag=wranglerorg-20

 

[scottgraham]

You might want to search this board, there also some underlayments people use. Don't know off hand. I just have carpet.

 

[Mora]

You might want to search this board, there also some underlayments people use. Don't know off hand. I just have carpet.

I’ll for sure look around at what people do most before committing to something

 

[Mora]

Update:
Gear just came in and it fixed everything! Speedometer is exactly on point! Thank you all so much for the help!

 

[TJScott]

For carpet, you can also check out Bedrug.