Quote:
Originally Posted by Tectoniic
This means that my actual speed is 1.87% and 3.08% faster than what the speedo shows right?
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Correct.
The speedo is actually calibrated to read a little fast in most cases so a slightly taller tire will end up being almost exactly right when you compare it to a GPS speed.
I'm running 225/40/18 right now, well in the summer anyway, and it's a good size looks wise and works really well at the track. If you are going FI and want more grip just look for a grippier tire than the PSS.
I'll need to replace my tires early in the season and will be going either 235/40 or 245/35.