As far as front tyre sizes go, I can thoroughly recommend going narrow. I fitted a 2.75 front tyre on my Period 5 historic road racer after being advised to do so by the distributor. It flicks from side to side like magic and Tracks very well in the corners, despite having no stabilising support Normally provided by the front mudguard. The mudguard had to come off to make room for the larger diameter disc, but a fork brace is on my wish list. It’s just a matter of when.