Wide tyres are the suck, just replaced my 4, 2x235's were $160ea and 2x255's were $300ea.
And you'd be very surprised how much difference a pod and zaust make, when mine was bone stock, yes totally stock, I ran a 137rwkw then put a cat back super dragger on and ran 152rwkw on the same dyno no less than 4 weeks in between runs.
Now I got 177rwkw, hmmmmmmmmmmm mid range ROCKS with an SAFC tuned properly