Has anybody used the 2014/2015 Factory 18 inch wheels with LT275/70R18 tires on a 99 CTD 4x4? Any problems or rubbing? DO the 18's fit the drum brakes and rear hub ok?

Time to buy tires for the 99 and with all the pulloffs on e-bay its tempting to just buy new 2015 pulloffs.

The 18's are 2" taller than the factory 265-16's on my truck, I do know that I will loose a little gear ratio going this route any thoughts on how bad this will affect my towing? 354 gears and tow 8500lb trailer.

Thanks Paul