35/12.50 odometer difference

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Apr 3, 2019 | 11:24 AM

Sasquatch 6.2

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35/12.50 odometer difference

I recently put 35/12.50/18's on stock running gear. Does anyone know what the difference is on the odometer? thanks

Apr 3, 2019 | 11:36 AM

jackbauersmom

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From: Michigan

there are tons of free speedometer apps you can download on your phone and see for yourself. my speedometer was actually improved and was dead nuts on with my 35/12.5/20.......... assuming the app was correct.

Apr 3, 2019 | 11:38 AM

Tricon

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From: SoCal

Use FORscan to change the tire diameter calc in the IPC (your dash cluster).

Apr 3, 2019 | 04:20 PM

dpayne7571

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Quote:

Originally Posted by Sasquatch 6.2

I recently put 35/12.50/18's on stock running gear. Does anyone know what the difference is on the odometer? thanks

Those are some good looking tires! Which Open Country tires are they? Is the ride still good on highway? Im looking for some 35s to put on my stock 18s that don’t flare out past the fender.

Apr 3, 2019 | 06:45 PM

Sasquatch 6.2

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The R/T’s. They aren’t bad. Definitely need to upgrade to fox or bilstein for a smoother ride, so that’s next

Apr 3, 2019 | 07:42 PM

MBaldo

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From: Salt Lake City

I have the exact same setup and have the same question. Mine sure seems off when I'm on the highway at say 75 mph. Seems like I'm going 80+

Apr 7, 2019 | 08:52 AM

MBaldo

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From: Salt Lake City

Tested mine yesterday with an app. With 35" x 12.5" x 20" Wheels, it's exactly 5 mph off.

I also tested the app in my Grand Cherokee is it was dead nuts on, so I now know that if I'm going 70 in the F350, it's actually 75 mph on the highway.

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Apr 7, 2019 | 06:18 PM

MBaldo

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Joined: Mar 2019

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From: Salt Lake City

That's great news. I'm only 2 months into my new F350. I know nothing about Forscan.

Apr 7, 2019 | 08:05 PM

#10

Maiden666

Tuned

Joined: Nov 2018

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From: Salt Lake City UT

M,
about to leave NY heading home...will text you tomorrow. Have done numerous Forscan mods on mine. Works great👍 Taking the wifes Highlander to Zach and Justin in the morning..

Apr 7, 2019 | 08:18 PM

#11

MBaldo

Senior User

Joined: Mar 2019

Posts: 486

Likes: 8

From: Salt Lake City

Quote:

Originally Posted by Maiden666

M,
about to leave NY heading home...will text you tomorrow. Have done numerous Forscan mods on mine. Works great👍 Taking the wifes Highlander to Zach and Justin in the morning..

Awesome! I would love to learn Forscan. Safe travels!