I'm still deciding on either a P85 or P85+. I drove both and like the P+ but the constant ride is a little rough on a grainy road. Not pertaining to patched or pothole roads, that is understandable . I have talked to some that have replaced with 19's. I'd just like more feedback on others that have done it. Tesla sells and condones 21's but seem to allow other sizes even in the summer months at the service centers. Maybe there is another 21 inch tire that would ride OK but there don't seem to be many selections in that size. I'd like to go to maybe wider 19's or 20's but not sure if wider is needed. I do think that the standard 19 tires that come with the P85 are good as all season are concerned but seem to loose traction under higher acceleration, especially in turns, but probably would still be better on a P+ handling wise. What other wheels or tires has anyone used for whatever reason (quality or replacement cost/wearability )? Would a P85 and a P85+ feel very close if they both had standard 19 inch wheels? I really want to make a decision soon but I'm concerned if I get the P+ that it might still have ride concerns even after getting different wheels/tires. Thanks ahead for any input.