Quote:
Originally posted by DemonSVT:
The speedo get substancially off the further past 75-80mph you go.

[b]close estimates
3-4% at 50mph (48mph)
5% at 75mph (72mph)
7% at 100mph (93mph)
9% at 125mph (115mph)
11% at 150mph (134mph)

Tire diameter can drastically effect indicated as well.

I have hit as high around 150mph indicated and the OBD-II showed 136mph max speed. I have stock tire diameter (minus a tenth or so for wear)
It was still pulling well at that point too...

Closed road, professional driver, contents may settle, disclaimer of course... laugh [/b]


Sweet that means I can go 80mph (-77mph-) and worry about it wink Did you get those numbers at the dyno DemonSVT?

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