Speedometer Error

[DMAX Daddy]

Okay, Im asking for opinions here, nobodies is wrong!

Using a GPS I borrowed, my Speedo is 3% off:
Speedo 40MPH = 41.2 Actual
60MPH = 61.8 Actual
80MPH = 82.4 Actual

I have been waiting to get a box like the TTS/Predator to correct for Speedo error.

Now my question, without starting another which box is best argument, should I open my search to all boxes (like TST, Juice, Hot Juice) and quit being so anal about my speedometer?

[ 02-28-2003: Message edited by: DMAX Daddy ]</p>

[NWDmax]

Buy bigger tires.LOL :D

[schnier]

I also went from 245 stock tires to 265 tires a couple of months ago. The speedometer reads just like yours, off 2-3 miles per hour. Do not forget your fuel mileage will also decrease because of the larger tire circumference. I am wiating for the revision on the predator to correct it, in the near future, I hope.

[Kennedy]

Your results are similar to mine on the dyno. I believe the factory speedo is a couple percent "optimistic" and the change in tire size flips that around. The odometer, on the other hand is now off whereas before it seemed to be right on...

[hoot]

I have noticed that with the 255/85-R16 Dunlop Radial Rover RV's seem to have made my speedo very close to right on judging from road speed readers and seeing cars digital readouts from my truck.