in my defence, I was only being partially sarcastic. I squeezed 700x35mm into a frame designed around 23mm tires that doesn’t have any dimpling on the inside of the chainstays for clearance. What kind of frame are you riding? Is it supposed to be a ‘track’ frame, with tight clearance? What size tires did it come with? What rims are you riding on? What is the rims width? What type of tire are you looking at? What about your brakes? Do they have clearance for the tire? There are a lot of variables that have to be known, before anyone could genuinely help you answer your question on clearance/fit.

as far as what size/type is best, well as a commuter myself I would say that your weight and the extra weight of anything you might be carrying on the bike (groceries? Work stuff?, etc) needs to be taken into account. The heavier the load, the larger volume tire you’ll need. If your tires are too small, you’ll be getting pinch flats on the regular and that’s no fun. If youre a lightweight person and you don’t plan on carrying a lot of load you might get away with smaller tires, but I wouldn’t recommend anything smaller than 28mm for commuting. If you feel you’ll need larger tires, you may need to consider purchasing a bike more dedicated for commuting so that you can fit larger tires. As for type, I would recommend avoiding expensive racing tires, that includes gatorskins. Unless you ride somewhere that getting actual punctures is a risk, tires like that won’t do anything but empty your wallet. Puncture protection does nothing to stop a pinch flat. Again, I speak from years of experience. Gatorskins are racing tires. You’re not racing. I would strongly recommend you look at Schwalbe tires. https://www.schwalbetires.com/bike_tires/road_tires They have a large selection of really great tires geared toward commuting, and they’re quite affordable by comparison to dropping $60+ per tire To equip your bike with unnecessary racing tires. What you really want in a good commuting tire is long lasting tread, versatility in riding environment, so say good tread for being able to confidently ride on dirt, loose gravel, sand, water, etc. You want a tire with a heavier, stronger sidewall. Pretty much the exact opposite of everything a racing tire is. Racing tires just don’t do well as commuter tires. Anyone who says the opposite is either lying or has no clue what they’re on about.

For everyday use a 28 or 32 (I prefer 32) is a good size. If you’re heavier you should lean towards 32. My personal preference is that a 35 is the best all around size for a commuter, and there’s a long history of the use of 700x35 for utility bikes, to back that up. If you can’t fit a 28, then you need to accept that your bike isn’t a good choice for commuting and start with a frame that can fit larger tires.