Hi guys,
Since my RX7 has 18" wheels, does this mean my speedo will under-read slighty?
Anyone know by how much? Can it be corrected for via PFC?
Ta, Paul.
If you look under the Wheels section, there is an excel spreadsheet that will work it out for you.
Just input your tyre sizes and there you go.
Fish
Ta muchly!
Cheers, Paul.
my 18\'s work out at about 2mph difference. When im doing 28 im doing 30 basically