>>1202205You look like you have room for a 25, maybe even 28 but you need to grab a ruler (or better yet, measuring calipers) and measure the space to be sure. Keep in mind some tires are 1-2mm plus or minus the advertised size. Final width is also greatly determined by rim width.
I just measured two different mounted tires right now and they're both 28s but one measured 26.6mm and the other 27.5mm, both different types of Vittorias, which is common for them to be thinner than the advertised size. I don't have my Continentals mounted right now but if I remember correctly, they measured somewhere near or around 29mm, which is normal for Continentals as they usually size a little bit wider. Anyways, that's all irrelevant. Grab a ruler and measure your gaps and hope your future tires fit. And again, measuring calipers are a great tool to have and digital ones are relatively low cost these days
