thanks all, i ended up just putting the carbons on with the stock tires. put the rovals on the stache for sale. probably will change tires later. the tires seem ok as far as i can tell. wouldn't mind going bigger on the front though. what are some good options that roll as good or better...
got the bike last night. took tire off of front rim and also off of my carbon rim from the stache. weight is almost identical, carbon rim was only .04 lbs lighter. probably because the carbon is i35 and the roval is i30. i know from experience with the stache that the carbons were a huge upgrade...
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...