I was commuting/touring on my ninjette, replaced the IRCs with BT45s in the stock sizes. For the riding that you're doing, you'll notice the difference and love it! I sure did. They're great tires. I wasn't on the track, and I think for street purposes they do a great job. Don't get larger sizes.
I'm back to IRCs now, and I'm missing my BT45s, lol. When I wear out my new IRCs, I'm going back to BT45s!
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