So my 2012 Vegas failed inspection due to rear tire when, so I thought no big deal, I'll hop online, order a new set be ready to go in no time. Two days later I think I'm going to have an aneurism from looking for a tire that will work. I'm trying to avoid the stock D417 as the consensus is that they offer some of the worst performance (though they do have the benefit of being astronomically over priced as they only seem to be available from dealers), but every other tire I've looked at that seems to fit the dimensions (180/55 18)isted in the manual keep coming up as "doesn't for your bike". Upon further inspection, the only differences I noticed were either the load limit (most are higher than OEM) and radial instead of bias ply. My question is two part, first, as long as the size dimensions are correct, and the load/speed ratings equal or higher, I should be able to have the tire mounted, correct? And second, am I better off going with a bias ply with a higher load limit (and if so, should I not exceed a certain limit? For instance I'm looking at set of Shinko's but the load limit is 1100lbs vs the recommended 850lbs) or a radial?