Good question...actually my 305's on my 17x8.5 SCS Ray10's cleared better without any spacers on. When I wheeled them like that I didn't rub the lower fender mount at the back side of the wheel well at all. I do have a BMC and a front aftermarket bumper so it cleared other areas just fine. Turning on compression...as in going down a switchback with a drop off...did cause it to rub the back of the wheel well, but not much you can do about that...except run a crazy high caster...I'm at +4.0 already with my LR UCA's.
Buuuuuuuttttt...I wanted to add a little poke to my wheels and improve, aesthetically to me, my stance. I added 1" BORA wheel spacers and got the stance I wanted, but I also added a rub area to the lower fender mount. I took off the passenger end rocker trim piece (plastic cap at the back end of the fender where the rocker starts)...well, ok I lost it on a trail when it popped off...and on both sides I have experimented with trimming. I've cut the fender liner up pretty high in the fender wells...On the driver side, I have cut off the metal support bracket of the lower fender mount and hammered it in and upward. This caused a tiny bit of bulging of the lower part of the fender, but with the hammering, it is holding it firmly.
In short, I wheel and trim...wheel and trim...wheel and trim...sometimes I trim while I wheel. The plastic fender liner is really easy to cut with a knife!
Run the 305's!:zoom:
Just be prepared to make some more mods and/or trimming.
weeeee is running the same wheels and he's on 17x9" SCS rims, no spacers I believe. He had similar rubbing issues which led him to develop the fiberglass fenders that are currently taking orders for in another thread. Probably the best solution and likely what I will do as well.