Do it. I'm on 35mm on my commuter and 25mm on my road bike and, although the commuter weighs about twice as much overall, if it's flat, it's just as fast at the same effort, corners better and is more comfortable/smoother. I'm going to take my road bike up to 28mm if they will fit.
What tyres are you using? Are you already using folding?
Going from GP4000s in 25mm which just punctured all the fucking time to Schalwbe durano wired. Obviously the durano will be heavier but I've been riding marathon plus in the meantime and they weigh more than the bike!
Do it. I'm on 35mm on my commuter and 25mm on my road bike and, although the commuter weighs about twice as much overall, if it's flat, it's just as fast at the same effort, corners better and is more comfortable/smoother. I'm going to take my road bike up to 28mm if they will fit.
What tyres are you using? Are you already using folding?