Looking for a folding 700x28 tire to use as a spare on the road. The 700x28 is a compromise because I can use it on several bikes I have if necessary. Anything smaller or larger will not fit on some of my bikes. Should be low cost with slick or non aggressive tread.
In my own brousing, I can find such tires up to around 700x25 but have not found anything larger. What have I missed?