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

Blog
Forum Site Leaks Alleged Jeep Truck Images, Info
  • Matt Konkle
  • November 14, 2018
Long awaited, these sans-camouflaged photos show off Jeep's first truck in 26 years.
Blog
Overlanding Far From Over At 2018 SEMA Show
  • Matt Konkle
  • November 7, 2018
No longer just a small niche category, overlanding's popularity with buyers and vendors at the SEMA show is evident pretty much everywhere you look.
IMAGE GALLERY
2018 SEMA Outside The Hall Vehicles
  • Matt Konkle
  • November 6, 2018

IMAGE GALLERY
2018 SEMA Overlanding Rigs
  • Matt Konkle
  • November 6, 2018

Blog
Warn Debuts 8274-70 Anniversary Winch At SEMA
  • Matt Konkle
  • November 6, 2018
Warn's 70th anniversary winch shows off power, superior design, durability and reliability — all in a beautiful retro style guaranteed to appeal to new and old Jeep enthusiasts alike.
IMAGE GALLERY
2018 SEMA Concepts, Show Vehicles, Sights
  • Matt Konkle
  • October 30, 2018

IMAGE GALLERY
October 2018 Jeeps & Java - Spruce Grove Tree Farm
  • Matt Konkle
  • October 22, 2018

Reference
Is Buying A Hardtop Worth Replacing Your Soft Top?
  • Scott Ammerman
  • October 12, 2018
If you are debating about replacing your soft top with a hardtop, here are some pros and cons you need to read.
Blog
Deals, Jeeps, Advice, People All Help Fuel Quadratec's 2018 Tent Show Success
  • Matt Konkle
  • October 9, 2018
Whether its the product discounts, fun entertainment, vendor participation or just all the Jeeps in attendance - Quadratec's Annual Tent Show has something for everyone.