Interesting thread, I have been thinking ahead to some drier weather tyres too…
Racing Ralph 2.25’s will be on my race bike this year.
Light, strong, (so far), and good grip.
Ralphs are hard to beat in almost all areas except their durability. I find them perfect until something innocuous tears them to pieces around the tread area. They are also the only tyres (with Rons) that I’ve ever managed to blow off a rim. The carcass and beads are just too flimsy on Schwalbe tyres for my liking although they are cracking tyres while they work.
There’s a 2.25 Burt SnakeSkin now too I believe.
Fairly weighty though at 580g with the 2.1 at 545g. They feel awesome to ride as the Burts are so supple but I seem to remember a study putting them as only 3W more efficient than a Ralph which has better grip in a wider variety of conditions. Snakeskin barely added any puncture resistance in the tests too although I forget exactly how the tests were conducted and how relevant they are in the real world. Unless the Schwalbe manufacturing has changed I don’t find snakeskin an advantage as it is always the tread area that cuts for me 🙁
From a weightweenie point of view 600g seems around the benchmark for a reliable, fast XC tyre.
Other tyres I’ve thought about:
Conti Race King 2.2 – Ralph light, same rolling resistance as Burts supposedly but I can’t see them being that durable and am not so convinced by the lack of cornering tread/ bite
Geax- Unsure what looks and sounds best though as there aren’t many reviews
Also worth a look are Bontrager XR2’s which are very grippy, fast, supple… but crucially with a great carcass too. I managed to find a pair that averaged 605g last year but the ones I just bought were over 680g 👿 I’ve kept one to use with an XR3 on a second set of wheels for rougher rides but that isn’t an ideal race combo
I’ve been tempted to give the Vredestein black panther 2.2 a go for a while now, maybe with an xtrac up front????