http://www.usedottawa.com/classified-ad/8405600 just Wondering.I think they would look good(seeing they have a Mazda Logo on them and all..heh.)
they are 17x7 with a 55 offset.

 

The offset is WAY too big - Stock on an FC is +40 and most people go with a lower offset. The bolt pattern might be ok, but they will need massive spacers... not worth it imo!

 

How does a wheel with only 5 bolt holes support both "5x114.3mm (also fits 5x115mm)" ???

If you mill out 20mm of material from the back face of the wheel it will fit. But I have never heard of anyone taking close to 1" of material away from a wheel to achieve the proper offset/backspace.

 

FD rims are 17 x 8 +50, which is 151.6mm backspacing and need a 20 mm and 25 mm spacer.

However, FC rims at 16 x 7 +40 are 128.9mm backspacing, these 17 x 7 +55 have 143.9mm backspacing, so you would only need 15mm spacers all around to be at the exact same as stock's backspacing, I'm sure there is room to give though. If you are going with aftermarket coilovers, you may not even need spacers.

I'd go check to see what kind of clearance you have right now on stock offset, and see if you can squeeze 'em in.

 

crap. You are right. I forget how backspace worked...
good catch.

 

But, I've never heard of 115mm wheel pattern. It might just be a poor conversion from the Ford 5 x 4.5" (which is the same as 114.3mm) and actually be the same thing...

 

It will fit with a 15mm spacer.

 

HEY,I thought you Committed SUBEYCIDE! Aaron,Wassup!??
anyways,I appreciate the Info guys.It was just a random question.Damn,I'll be glad when I can actually SMELL my Car again!

 

HAH, yup. The WRX consumes my car-life now.
I will be looking to sell the RX-7 shortly...but someday I want to be back into something rotary powered.

 

They look like 2005-2006 MPV alloys they were actually 17X6.5 or 2004 Mazda 6 alloys same width. Mazda 6 was 55+ offset