This may be a fairly simple question so please excuse my lack of bike knowledge. Google hasn’t helped either.
I’ve got a new bike with Di2 and wheelset that runs a 11-28 cassette.
My road bike is indexed for an 11-30 cassette (which I prefer for hills).
If I just swap the wheels between the two bikes, will this be dangerous, or will I just not be able to access the 30t cog on the old bike?
If I swap the cassette on the wheels to a 11-30, will I just need to adjust the indexing on the new bike (which should be easy with Di2) or will I need to get a new chain?
Any help really appreciated. Ideally I want to use the wheels on both bikes.