Schwalbe One Performance RaceGuard Folding Bike Tire 28-406 (20 x 1.1 Inches) - High-Speed Road Cycling, Commuting & Racing - Lightweight & Puncture Resistant for Optimal Performance

There are very few lightweight race tyres in this size available. I had been using the Schwabe Pro One road tubeless on my adaptive race trike, and they were very quick and lightweight, but they are expensive, and a real pain to install on 20 inch 406 rims. Worse, a latex allergy meant I couldn't use them tubeless, but had to stuff a tube in the rim along with the tight fitting tyre! Until the non-tubeless One was introduced, there were no alternatives for a decent race tire.The One , which is NOT tubeless, installs easily and I haven;t noticed any performance difference from a Pro One with tube. The Ones are, however, a lot less expensive to buy, and a lot easier to install, especially at roadside after a puncture.A slight bulge is present on 1 of the Schwalbe Ones I installed, not enough to change out for training purposes, but probably won't race on it, especially on courses with steep descents. The other tyre is fine, and they both seem to ride evenly, no felt bump from the tiny bulge. And the bulge area looks and feels OK from the inside and the outside of he tyre.I suspect that there may be a challenge to making 20"/406 racing tyres, as every other brand had bulging or de-laminating issues that showed up on the first ride - including Conti Black Chili's - but only in the 406 size. The Pro Ones were good, and I suspect the Ones will be just fine. Just ordered 2 more to have on hand so I don't have to go back to Pro Ones!