I have the original edge/gryphon.
I also don't have a gps, I do however have a gps app on my iPhone. Will that suffice?
I've never entered any tire size figures in my gryphon, does it already have a stock number for me to work with in it?
If so how do I find it?
So what I would do is reset my trucks trip and start a new trip on my iPhones gps travel for at least 10 miles?
Once I have my figures what do I do then? I'm sure they will both be different.
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