I favor what Ninja6r wrote about size. Stock size if you can. I havve had to go next size in the past due to what is available. Oversizing a tire on a stock rim I think can give too much ballooned side wall, does this handle better? It might look good if it is not rubbing somewhere. There is so much manufacturer fitting information available I will check the tire makers site for fittment. Dunlop for some tires and bikes lists different tire pressures than the bike maker. I go with the tire maker in this instance.
I had a 1980 suzuki 1100 (pre GSXR), the stock tires on it were pretty good. When I went to replace a worn tire I thought I would just put the same on. It turned out the only place to get that size tire, and that model bridgstone, was at the dealer. It was an actual suzuki part number and cost about $170 USD in 1981. So I went aftermarket, we were getting good compound rubber for about $90. The size had to be bumped up once, because suzuki contracted their tire and size to be suzuki only.
I dont have my cbr yet, but I will wear out the tires before replacing them. I saw a guy on a Matchless 350 smoking modern sportbikes on the street. In the twisties everybody beat it off the line, he would get up to speed and keep it there. His tires were OLD (vintage) semi knobbies. I was riding double on an rz350, there was an fj 1100, some 600cc and a buncch of british bikes. Don had been riding abut 50 years at this time.
