I apologize if I misunderstood the question. Larger tires will fit on the stock wheels just fine, especially the 265/70/17s you are discussing. Some have said they can fit 265s on the stock setup and just do the pinch weld modification -- no UCA bolt trimming necessary. Others have said that it wants to hit the UCA bolt so they need to trim the bolt or add spacers. This all depends on the tread profile.
Your stock wheels will work just fine for you if you are ok test fitting and possible adding spacers if necessary. If you want to get a new set of tires, then go for it. My point is that it isn't necessary.
2005 WK 5.7 ORT | Mod SL (OME struts & 990s) | JBA UCAs & Discos | Saguaro Front Bumper | Warn Zeon 10s | 285/70/17 BFG TA KO | AIRAID CAI | Gibson 3" Exhaust | DiabloSport Intune | JL Stealthbox