What wheels will fit my 89 GM?

[whitemgm]

I am looking into getting some new wheels for my Grand Marquis. I was looking into a set of these.



I would like to do 15x8s on the rear and 15x7s on the front. Does anyone know what backspacing I need to make this possible? And what tire size would look good and work well? Also, my rear springs are tired. Especially the right side. Anyone got a line on some that will raise the rear slightly?

[jaywish]

Nice looking rims.

You may want to consider 16" rims. A common and really helpful upgrade is front brakes from any panther 98-02. They require 16" rims. Also the rears can be swapped from any rear disk setup form 92-11.

[whitemgm]

I don't think I will be upgrading the brakes anytime soon. I just need to know what back spacing to use.