JamesWyatt
Well-Known Member
- Joined
- Dec 2, 2017
- Threads
- 3
- Messages
- 170
- Reaction score
- 234
- Location
- New Mexico
- Vehicle(s)
- 2025 Wrangler JLUR X
Good to know, I never tested mine before upgrading to 35s. Our Mini is 2mph slow on the digital speedometer, and I’ve had other vehicles like that. Then I guess by upgrading to 35s (and adjusting the tire size in the computer accordingly), it put the stock 4:10 gears in a sweeter spot for my use, namely not having to kick down as aggressively when going up steep inclines at altitude. Or maybe it was just less rolling resistance with the KO2s over the stock Falkens.Gee, mine have always been pretty much spot-on from the factory. Every one of them, all of our Grand Cherokees, my Gladiators, my Chevy.......... my Ford.
I've used GPS in them over the years and the GPS was right with the speedometer in each.
I have yet to have a vehicle where the factory setting didn't match my Garmin. (yeah, I still use my phone or that old Garmin now and then because sometimes the Jeep NAV isn't correct in where to go)
I watch stuff like that- it's how I'm wired- attention to detail to extremes and unable to prevent input even input I really don't want.
Why would they set it low - that would give you miles on your warranty. Seems counter productive. If the speedometer is slow - then the odometer will be counting fewer miles. Also - mile-marker checks are a tell.
One thing I've found on both of my JT Overland is that the big fat digital numbers in the middle are 100% correct (even when new) but the analog needle tends to read 1 to 2 mph faster, depending on how fast you are going. Weird - digital says I'm right at 60 and yet the dial my wife sees says 61-62.
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