When I was avidly following Formula 1 (F1) in the early 2000s I always wondered why the heck they keep using 13inch wheels with balloon-like tyres especially when road tyre technology has evolved into rubber band thin tyres running at least 18 inches those days (these days cars run even larger sizes). Then we also had the DTM and BTCC which ran 18 inch wheels and tyres. Also slimmer than the donuts used in F1. But now, F1 together with official tyre supplier Pirelli has decided to test the use of 18inch wheels on the cars. If all goes well, we may soon see F1 cars having more realistic looking rubber bands instead of the donuts used nowadays.
