right now i'm researching new tyres for my wife's Swift ZC21S
orginal tyre size 185/60R15
changed to 16" rims and use Toyo DRB 195/50R16 (-0.27% diameter)
now i'm looking for 205/50R16 (+1.39%...
These files I made long ago for my own reference about the later year fd3s ECU and solenoid system blackbox guide. I hosted them using geocities and posted it on the big rx7club forum as well as the fdowners forum...