Originally Posted by rithem

I still think a fatter tire (25 or 28 and dialing tire pressure) is better solution to road chatter suppression than worrying about frame material. Aluminum doesn't rust, but cheap a** Aluminum weld can fail (rarely but plausible, steel is likely, in most cases more durable overtime ... pros and cons is the name of the game.

I'll stand by tire selection as my advice and leave the frame material niggling to others. my 2¢.