Originally Posted by Joe@ApexRaceParts
If you would like to do the 18x9" ET42 flat face front wheel on your car a 5mm front wheel spacer would be needed to clear the front strut. If you were looking to use a 255 width front tire and you have the required negative camber obtained through adjustable camber plates than you would need a 12mm front wheel spacer to clear the strut.
Hmmm, so basically an overall ~ET30 offset with a 18x9" will allow me to fit a 255/35 FR? Or 17x9" ~ET30 255/40? I believe your EC-7s come in that offset as well as the 17" arc-8s correct? I will have camber plates and KW coilovers but want to avoid the spacers.