Running Rear 18x9.5 +35 offset with 285 35 18 tires (stock Suspension)and have a rubbing issue on only the drivers rear side. I know I need to lose a few pounds but could there be any other underlying problem?

 

You did not mention if the rubbing is on the outside against the fender or the inner suspension.
I suspect the inner or else your suspension or body has been damaged or you alignment is way off.

I run Enkie PF01 18X9.5 +45 rear wheels running Michellin Pilot Sport 4S 285/30-18. They are noticeably wider than the same size Advan AD08R which I use to run for years.
My rear camber is minus 1.2 degrees.

 

The rubbing is on the outside of the tire just a single cut line less than a quarter inch deep. Could be alignment I guess since it is only happening on one side.

 

Did you roll the fender lips? A must for wider tires/tyres.

https://images.search.yahoo.com/sear...g&action=click

 

It's worth measuring ride height on both sides. Most likely the driver's side is sagging more than the passenger side, especially with a driver in the car.

If you have stock suspension, the rubber mounts at the top of the shock/spring assembly can wear and settle over time, typically more on the driver's side.

If you have coil overs, it's worth adjusting so you have consistent ride height.

Regardless, you need to roll your fenders. Get an Eastwood fender roller and do it right. Do both sides too.

Dale

 

Not to say this isn't what you think it is, but are you sure the "cut line" is actually the result of contact with the fender? Are there rubber marks on the fender edge? Are there indications that the fender contacted in another location close to that line? IMO, it's unlikely that there would be a single cleanly cut circumferential line close to 1/4" deep from fender interference.
So:
I've seen instances, without external contact, of tires cracking in a pattern like that from two possible causes - poor bonding between tread compound and sidewall compound and/or deterioration/cracking from long term ozone/sun exposure.
If you look at the tires very closely, you should be able to see a slight difference in color and/or texture at that location if that's where the sidewall compound meets the tread compound.

 

Its just too wide of a tire for the non-ideal +35 offset wheel.

Get 255/35-18 tires like should be on 18x9.5.
Or get the right width and offset wheels for a 285 tire (18x10 +50, 18x10.5 +45 or 18x11 +45).
Or run more negative camber
Or roll the fenders