Speedometer/Tachometer is off?
Senior Member
Joined: Nov 2011
Posts: 292
Likes: 1
From: edmond, ok
I have over sized tires 33s and I have the edge on the dash which has been set to the right tire size so I have that gauge and then the normal speedo then I also have a headunit with built in gps. So if I'm going 70 based on the normal speedo my edge tells my 68 and my head unit gps tells me 73. So I just cut the difference and listen to the normal speedo.
Thread Starter
lol, wut
Joined: Sep 2011
Posts: 553
Likes: 27
From: Texas
I don't think any of them read perfect. plus i remember reading somewhere that ford sets your speedo to run anywhere between 3 to 5 miles faster then you really are. I'd say if your in that range i would think you are ok. like my edge shows 63 mph and my speedo shows 65 but i did go up one size in tires too.