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- Thu Jun 27, 2019 7:41 pm
- Forum: Beta testing
- Topic: Setting arbitrary tire sizes for speedometer calibration
- Replies: 83
- Views: 73924
Guys, I'm running 35X12.5X20 Toyo A/T II on my 2019 F250. I'm trying to dial in my speedometer using the good spreadsheet and line 726-12-01, but I'm still 6mph off. Has anyone had any success with a 17 and up 250 and the same tires I'm using?