2004 F-350 Tire Size Change

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jfogle01
Posts: 1
Joined: Sun Dec 22, 2019 5:18 pm
Vehicle: 2004 F-350 S/D K/R FX4 6.0L

2004 F-350 Tire Size Change

Post by jfogle01 » Thu Jan 23, 2020 9:40 pm

New user here with LOTS of questions....but I'll start with this one! I have an 04 F-350 6.0 and recently started using Forscan and cannot figure out how to adjust the tire size for my truck for proper speedometer and mpg calculations since, I went up from the stock 265/75's to my current 315/75's! Any help would be greatly appreciated! Thanks in advance!!!

Diesel Tech Chatt
Posts: 1
Joined: Wed Jan 29, 2020 2:29 pm
Vehicle: 2001 7.3L Power Stroke Excursion, 1999 7.3L F250

Re: 2004 F-350 Tire Size Change

Post by Diesel Tech Chatt » Thu Jan 30, 2020 11:54 pm

On the 7.3 and 6.0 trucks, the speedometer & VSS signal is generated by the ABS module, so it is the ABS that needs to be reprogrammed. I don't have the Extended FORScan license yet, so I don't know if it can program the ABS module.

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