Marc:

I dont believe spacers can help you in this particular situation. Spacers are mainly used to change offset of the wheel. For example, your stock wheels (rear) have a 35mm offset. Now if you bought a wheel (same size and width) with a 25mm offset, then your wheel will sit in the fender 10 mm closer to the hub. To fix this, you can add a 10mm spacer to achieve the 35mm offset and thus making your wheel look stock again.

In your case, the wheels are the same size (height and width, front and rear) and gives the car a more uniform look. Because the wheels are the same width, it is very difficult to get a "wider" rear tire look. You probably can buy slightly wider tires for the rear, but I think to achieve the look you want you will need two rear wheels that are wider, that is 2 17x9.5 wheels.

If you used a one inch spacer, your car's wheels will stick out one inch further away from the hub. Basically, your car might look like the rear wheels are sticking out of the fenders.

My suggestion is to find 2 rear wheels that are the same except have 9.5 inch widths.

Any one have a better idea or can shed more light?

Good luck,
DLS

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1998 C43
1994 C280 (Retired)