Seeing the question about spacers, Shifty with the offset you have plus your 255 tyres its a big no to spacers without a lotta work

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As you will see from the pictures I and quite a few people run 20mm spacers on the stock 40 offset and can just about run 245/40/18 Yokohama Sports:chat
Hope this helps
(click the picture to get it opened up and you will see what I mean)