If you want to get the most out your tires go with a square setup. I would recommend 18 x 10.5. I am running 18 x 11 square plus 18 with 315 Nitto nt01. I also have a set of 18 x 10.5 with 295 Toyo r888. If you are keeping your 19's for street duty I would get a 100 tread r compound tire. I would go with Toyo r888r on the Nitto nt01. The Nitto's are awesome and will out last re71r. Nitto's are expensive and many are running r888r because they are almost as good but are cheaper than both nt01 and re71r.
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