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265's fit the OEM wheel ..... they may be a tad larger than recommended - can't remember the recommended rim width for a 265 - but they fit.
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265-60's may require the cladding to be trimmed - 265-60's were fitted to my VX when I purchased it and the cladding needed to be trimmed. I traded them for 255-55's after a few hundred miles.
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There are a few downsides to the 265-60 size - when compared to a 255-55. The 265-60 is heavier. The 265-60 may be more subject to issues with balance. The 265-60 may 'wander' more when driven over crowned and/or irregular road surfaces. The speedo will be off when using the 265-60. The 265-60 may 'throw' more 'crap' onto the cladding. The 265 size may be actually be wider than optimum for use in snow.