Reference
If the ring and pinion and/or tire size has changed on your Jeep vehicle, then you will want to replace the factory speedometer gear with the corresponding gear on the chart below.  The chart lists the gear ratio and tire diameter to easily guide your purchase into the correct size application.  Please note that if your vehicle is equipped with an electronic speedometer, the vehicle will have to be reprogrammed for the gear and tires sized.

Having the speedometer read accurately is important both on and off the road.  This will correct over all speed readings, correct shown distance traveled, and allow the jeep computer to properly shift your transmission (applies to Automatic transmission only).  Factory speedometer gear variances can be ±5% from the actual speed shown.  The recommended speedometer gear is based on the manufacturer's published tire specifications for revolutions per mile. 

Speedometer gears are quick and easy to install with simple hand tools.  Also suggested is the purchase of a new speedometer O-ring to prevent any leaks on the new installation.

Check out all of our Speedo Gears here

93-06 Short Shaft Electric Driven Speedometer Gear Chart
 Tire Size  44"  42"  40"  38"  36"  35"  34"  33"  32"  31"  30"  29"  28"  27"
5.38 Ratio
34 36 38 40 42 43 - - - - - - - -
5.13 Ratio
32 34 36 38 40 41 42 43 - - - - - -
4.88 Ratio
30 32 34 36 38 39 40 41 43 - - - - -
4.56 Ratio
28 30 32 34 36 37 38 39 40 42 43 - - -
4.10 Ratio
- 26 28 30 32 33 34 35 36 37 38 39 40 41
3.73 Ratio
- - - 26 28 29 30 31 32 33 34 35 36 37
3.55 Ratio
- - - - 27 28 29 30 31 32 33 34 35 36
3.07 Ratio
- - - - - - - - 26 27 28 29 30 31


55-93 Long Shaft Cable Driven Speedometer Gear Chart
 Tire Size  44"  42"  40"  38"  36"  35"  34"  33"  32"  31"  30"  29"  28"  27"
5.38 Ratio
34 36 - - 42 43 - - - - - - - -
5.13 Ratio
32 34 36 - - 41 42 43 - - - - - -
4.88 Ratio
- 32 34 36 - - - 41 43 - - - - -
4.56 Ratio
28 - 32 34 36 37 - - - 42 43 - - -
4.10 Ratio
- 26 28 - - 33 34 - 36 37 - - - 41
3.73 Ratio
- - - - 26 28 - - 32 33 34 - 36 37
3.55 Ratio
- - - - 27 28 - - - 32 33 34 - 36
3.07 Ratio
- - - - - - - - 26 27 28 - - -


Tags: 

Top Jeep Articles

IMAGE GALLERY
2018 New Jersey Jeep Invasion - Wildwood, NJ
  • Matt Konkle
  • June 18, 2018

Rows and rows of Jeeps stretching far down the beach. Thousands, really, of all sizes and shapes sitting under the hot June sun in Wildwood, New Jersey.

Blog
Jeep Truck Starts Undressing, Possibly Unveils Price Before 2019 Launch
  • Matt Konkle
  • June 7, 2018
Source claims Jeep's latest venture will have an entry-level price just south of $50k.
Blog
Fiat Chrysler Toying With New Jeep Wave Plan
  • Matt Konkle
  • June 4, 2018
New plans from FCA may have buyers rethink how they purchase Jeep vehicles in the near future.
Blog
Jeep Continues Its 'Best' Streak As FCA Roars To Another Record Month
  • Matt Konkle
  • June 1, 2018
Wrangler sales jump 29 percent in May as JL and JK editions continue to impress buyers.
Blog
The Difference Between Hub Centric and Lug Centric Wheels
  • Matt Konkle
  • May 29, 2018
There are a lot of factors that go into choosing new Jeep wheels. Lug pattern and size are certainly important, but so are lug and wheel centric fitment. Here is what you need to know.
Blog
Cruise Control Defect Sparks Fiat Chrysler Recall of 2018 Jeep Wrangler
  • Matt Konkle
  • May 25, 2018
FCA recalling 4.8 million vehicles overall from numerous brands covering 2014-2018 model years.
IMAGE GALLERY
2018 Wheelers LLC Overland Adventure - AOAA
  • Matt Konkle
  • May 21, 2018

Over 100 Jeeps, along with dozens of other four-wheel-drive vehicles and several hundred people converged on Anthracite Outdoor Adventure Area this past weekend for the second annual Wheelers Overl

Blog
Five Ways To Tell If You Drive a JL Or JK Wrangler
  • Matt Konkle
  • May 15, 2018
So you’ve taken the plunge and bought yourself a new Jeep. A sparkling fresh 2018 Wrangler. Or maybe it wasn’t even you who did the purchasing, but someone in the family or a significant other
IMAGE GALLERY
Quadratec Jeeps & Java May 2018
  • Cory Cole
  • May 15, 2018

While Sunday's weather proved quite rainy and cold, well at least for this time of year anyway, it didn't keep area Jeep lovers - including moms - from attending a special Mother's Day edition of J