I've been riding a Cannondale Synapse Carbon Ultegra Disc Demo bike this week. It's been a great road bike. It comes with 28's. The LBS says they've put 32s on them with no issues. Does anyone have any experience with riding this set up in gravel? I road a Diverge with 32s and they were more than enough for what I do. Any other issues besides tire size? It was a good "B" group ride, hoping it would make a good light gravel bike. This October Cannondale will come out with a 105 version disc Synapse.