93Cobra#2771 -
Quote:
Originally Posted by 93Cobra#2771
The pariticular upsize I have chosen is within .2% of the oem size tire. That is, if my memory is correct. I'm posting from my phone and too lazy to look at the miata tire size calculator.
I purposely want to keep diameter the same as I don't want to induce error into my odometer reading.
It won't be too much longer before I get the new tires, as my current ones are about shot. However I wonder if I can get definitive results as my mpg keeps increasing on each tank! Check my fuel logs and see my progress, mainly from refined driving techniques (and possible an über secret trick that I will share if it shakes out).
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I actually don't mind this because no matter what the odo reads, I *know* it's (just a little bit) better,
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Is it possible for you to do the before/after GPS test? That would (hopefully) add a little more data to your tire mod. Even if you go with the same size tires, I would think that the odometer would read different going from old/shallow to new/deep tread depth.
CarloSW2