Thanks for the quick reply! I seem to remember seeing somewhere that Konig started Advanti, but regardless it looks like they're all owned by a conglomerate now, which can be both good and bad. Interesting that they own Breyton, they make some insane wheels for BMW (my fun car is a current-gen 3-Series manual with sport package), they make one called the Spirit RS which in 20x8.5 size weighs only 16.8 lb.! The downside is that it retails for $1299/wheel.
I'm not so sure the drop in MPG is from wheel weight. Wheel (wheel+tire) weight mostly affects acceleration and handling, for example for acceleration a heavier combo takes longer to get up to speed, but once at speed it maintains its momentum -- unless you have very twitchy driving inputs, the MPG drop is likely due to the increased contact patch width. 20mm extra compared to stock 225 is almost 9%, let's call it 10% for ease of calculation. Now add to that the fact that not all tire compounds are the same, and you may have had Low Rolling Resistance stock tires while your new ones may not be optimized for gas mileage, and you can end up with your difference.
We're doing this upgrade for safety primarily. #1, if you blow a tire, when the car sits that high on tires, it can significantly upset the balance of the vehicle, not only do you lose good traction at the wheel which blew, but the car is sort of tipped over and the diagonally-opposed wheel will have a lighter load. #2, wider contact patch improves rain performance, breaking and traction if you need to execute a panic maneuver. Considering that we'll be going to summer-only tires (and max performance summer, at that), the compound switch alone will make a huge difference, whereas benefits #1 & #2 above can be had with the same exact tire compound.
I've been looking at what cars look like with 245/45R20 and it seems a bit aggressive. This is a family car. Still trying to decide if we can stomach the look. The thing is, going for 19s, I can't find an equally-light wheel and tire choices are worse (both heavier and more expensive, and not my preferred models). This particular wheel is not sold in 19" for the CR-V by TireRack for some reason, I'm not sure if it's an offset issue. I don't want to deal with the whole mess of getting TPMS installed myself so I'd much rather just have TR mount/init TPMS and mount tires and balance the whole thing before shipping so I just throw them on.
My main concern really is durability. Do you have any reservations about the build quality of this wheel and its longevity? We may move to a place with more potholes at some point. Not so much concerned about ride quality as I am about having a wheel crack. We don't drive like maniacs and try to avoid potholes, but I don't want to be at the limit either. How are the roads up by you?
Thanks again! Cheers,
-d