The real problem is that you can not run the same size tires on different width wheels and have the same diameter..which is required with all 4wds. You can be off up to 1/4" on softer stuff that will let a set slide and relieve the stress-buildup but that doesn't happen on pavement or hard pack as easily. In 2wd..no worries..but in 4wd..it's a problem. Some people do it and get away with it...for a while..but in time always seem to have issues with CV joints, U-joints, front case cracks, bevel gear problems...ect. My suggestion...is to go a head and get a set of wheels to go with the tires...all the exact same..and go with a 7" wide wheel with a tire not more then two sizes taller then stock and a 10" wide. It's an investment, yes, but you do want it right.