Bolt pattern for 96' Grand Marquis?

Can anyone tell me the bolt pattern for a 96 grand marquis?

Also what is the widest tire I can get? Backspacing?

For example I would like to put 19x9.5 in the back with 18's in the front to give it a more aggressive stance. Let me know.

anyone?

I'd check at the dealer for that stuff; however you can measure the distance between 2 holes that aren't adjacent for your spacing. For the offset, you measure between where the wheel bolts up and the edges of the rim, and keep the proportion the same on your new wheel. There was an article in a couple of magazines about it, but I forget the specifics. Don't know max size that will fit, but I'm running 235/75 R 15's on mine, and it's getting a little close when turning.

ur bolt pattern for the 96 is the same as mustangs. u can fit any mustang rim, up to 20"s on ur marquis. i dont kno the measurements but thats what i do know.