May having rubbing with 285 in front. I have 275 and it to rub on 18x9 before I replaced the saggy original springs and struts, with new. Now I am good, but wish I would have went 265, anything more is overkill. Extra weight and the steering wheel likes to fight me because of all the traction.
Plus 285 is going to make the tire bubble over the rim on an 18x9. It will save your wheels from the curb rash but kill handling with such a soft sidewall just imo.
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Black 04-0122 S/C
Series IV - Full Bolton - 2.8 pulley - Blower Cam
Only 9 PSI
403whp/406wtq 
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