Larger Tires and Speed Correction - Who Has Done it?

[HTX1811]

Mind sharing a link or something to see the steps for the FORScan process. I have FORScan and have used it. Just not for tire size.

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[DocE3Gun]

Adjusted mine via Forscan last night, set the cruise control at 50 and GPS read 49-50, then got on the interstate and set my cruise at 71 with GPS reading 70. Can't complain with that accuracy!

265/70R18 Toyo Open Country AT3 tires ....... I used 2515mm as the diameter in forscan.

 

[TJMarchand]

Now that 265/70R17 is apparently the tire size on the 2021 Ranger Tremor, will the dealership have a way to adjust tire size now? I don't really know how that works, however that is the size I'd like to upgrade to.

 

[MinuteMan]

Has anyone tried the:
SuperChips F5 Ford FlashPaq-1845?
F5 Ford Flashpaq | Superchips

It does tire size changes, a whole lot more and has some tunes. It is $350 and provides you with a two year warranty on your drive train.

• High-definition, 2.8" color screen
• Redesigned graphic interface for improved user experience
• Increased memory with faster processor for improved tuning & updating speed
• Performance tuning for Economy, Towing, Daily Driving, & Extreme Tuning
• Eliminate downshifting when climbing hills
• Speedometer correction for changes in tire size and gear ratio*
• Adjust speed & rev limiters*
• Tuning for shift points, shift firmness, & TQ management*
• Internet updateable with all-new update software via USB
• Active fuel management control*
• Vehicle parameter monitoring capabilities
• Read & clear diagnostic trouble codes
• Compatible with other performance upgrades
• 2-year powertrain warranty

I am strongly considering it, change my mind.

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