Tire size change with tazer mini

[Michael8780]

It has been reported that if the phone has a connection to the truck, it will show the speed reported by the truck and not the speed being measured by the app.

A standalone GPS unit is probably the best way to test. Using the mile markers on the side of the freeway is another option. Look for one of those radar signs they deploy in school neighborhoods or construction areas.

This makes sense but just to be clear my GPS app on my phone shows that I'm doing 65 but my truck Says 62. But I'll give these instructions a shot as well

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[SquirrelNuts]

I went round and round with the same issue. I ended up programming (as close as possible) as what ever the spec of the tire is. I tried the exact measurement method but the actual tire spec worked the best for me.

After multiple rounds of adjusting and test driving... I finally found the setting that got me spot on with GPS. For a Cooper Discoverer AT3 XLT in 315/70r17 = 33.89!

 

[aqcjeepGlad]

Wish I could get the Tazer setting to stick. I've done it multiple times and sleep cycled it at least twice each time and I still can't get it to stick. Any thoughts or tips on what finally worked for you would be appreciated. Thanks

 

[ScottsJT]

Wish I could get the Tazer setting to stick. I've done it multiple times and sleep cycled it at least twice each time and I still can't get it to stick. Any thoughts or tips on what finally worked for you would be appreciated. Thanks

Just a thought, have you saved the tire setting after changing the tire size? I tried this three times before I realized I had to save the tire size before I got it to work!

 

[aqcjeepGlad]

Just a thought, have you saved the tire setting after changing the tire size? I tried this three times before I realized I had to save the tire size before I got it to work!

Hey thanks for the idea. I'll bite, how do I save the setting? I have not been saving I just scrolled to reboot after putting in my size. I'll see what I can find in the directions, which are not the best in my mind. Thanks again.

EDIT: Okay the saving the setting thing works. I feel pretty stupid. But the directions are pretty crappy for this device. Once you start to understand how it works they make perfect sense but until then not so much. And yes I know it says on page 7 to make sure and save........ Thanks to @ScottJT Love this forum.

 

[ScottsJT]

Hey thanks for the idea. I'll bite, how do I save the setting? I have not been saving I just scrolled to reboot after putting in my size. I'll see what I can find in the directions, which are not the best in my mind. Thanks again.

Glad you got it to work. Sorry I am just now getting back on here. The Tazer Mini is a great product, but could be better with more instructions!

 

[LoadnGo]

After you have measured your actual tire diameter (countless times)- at normal operating pressure and warmed up driving temps, you can tweak the speed match.

To increase vehicle speedometer reading in relation to GPS Speed- decrease tire diameter setting of the Taser (and others). There is a moderate learning period for the ECM/PCM to acknowledge and adjust for setting changes. And that's in addition to the Full Reboot and 2 sleep cycles. Two or three routine rides at road speed for around 25-30 miles as you would normally drive on any given Sunday will produce true data values. If the speedo is still off repeat the process- ad infinitum! if you keep at it long enough you can get a perfect match!

 

[Gray Matter Jeep]

Here's the million dollar question to all... my apology if this is confusing.

What did your Tazer Mini report as the original tire size for a 285/70/17, when you get into that screen?

Why do I ask? Is there any chance my used Tazer Mini held is reporting what I had my 2020 set at, rather than what my 2026 OEM setting is? Like I said, sorry if that is confusing.

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