Hi Newbie, I wish I could say a lot more about the rims.  It's just what the service gentleman said to me.  I can say this,  when I tried the City 3 and then compared it to another model with the same size tires, we all saw that the rims were different even though the tire "size" was the same.  It's a shame, so proprietary on everything. 

I'm going back to SD to try them again.  My only concern with the City 3 is the torque. 40 nm.  Wish it was 80 like the City 5 or the RadRunner Plus. 

Thanks everyone.

I just returned from the San Diego/Imperial Beach store.  I tried the new RadCity 5.  Very nice.  However here is my issue.  The tires.  Strictly for PAVED city road use.  I talked extensively with a service person and asked if a more "treadey" tire is available.  Answer?  No, and if you put on a third-party tire it would most likely void the warranty.  Plus the rim is different. And he also said, they have zero parts yet for when they actually get some in stock.  Interesting.  I did like the quick response of the motor. But the fact that the tires are so designed for strictly commuting on pavement, it's a no-go for me. 

I then tried the Rad City 3.  Tires are 26" x 2.3" and have better tread ( at least some ability to ride on a hard gravel surface). I live in the desert so sand is an issue on roads, I need a little tread.   

Next thing I tried:  the RadRunner Plus.   Now I'm not a big fan of bigger tires, but this was not too bad.  20" x 3.3" tires. 

Thanks everyone.