picking up levo sl soon. search here looks like max size you'd want to go on rear is 2.6. haven't found anything on if you get much battery penalty by going up. i have a carbon i35 wheelset with i9 hubs that i was thinking about running on the new bike. i know tires are pretty subjective subject, but if i could get a few recommendations to look at it would be a place to start. or just stick with stock tires? are they any good? what about the stock rims and hubs? i'm thinking my carbon set would be a nice upgrade even if i stay with the stock tires on them.