u/kenweise

I recently purchased a 2017 transit connect. The speedo is wildly inaccurate (~10mph low at freeway speeds). The tire size on the car is correct.

My plan was to use forscan to tweak the tire size using either tire size, tire circumference, or a hex calculator I found online. I've done this with other Ford's that I have owned. The problem is that tire sizing is not included in any of the modules shown in forscan for my Transit Connect. I am using the latest version as of today (29Jun26) and created a new vehicle profile with this version.

How do I get tire size info to show?

I bought a 2017 wagon the other day. My wife was following me in another car on the way home. She called and asked why I was driving so fast. My car was indicating 78mph, but my actual speed was 85.

The tires on the truck are the correct size. I was going to tweak the tire settings using forscan, but tire info doesn't show in the app.

Where do I look next?