After reading a good review of the 26 mm tubeless version on BRR I got a pair of in 34 mm tube type, which better suits my needs. I rode them today at 45/50 psi and was amazed by the comfort on the worst pavement I can find around here. Better than the 36 mm Strada Bianca Pro and way better than the 32 mm GP5000.
In other aspects the weight (315 g) is good, handling is good, and rolling resistance seems good. I didn't test the grip. Wear and puncture protection remain to be determined. Installation was easy, no tools needed.
One caveat: since my 30 mm wide rims didn't have tires mounted I used those even though that's an odd combination. No worries since I wasn't riding fast or far from home. On those rims the tires measured almost 38 mm wide but retained their round shape. Also gave me a real aero look. 🙂
Don't try this at home, the 2022 ETRTO spec is a 15 to 27 mm rim for a 33 to 35 mm tire. I'll be moving them to my 25 mm rims soon.
I have a pair of both the tubeless 32 and 34 on my shelf waiting for me to decide which to use. I like Vitoria for mtb and road tires and I think these have a lot of potential for a nice riding tire with a bit more durability and grip than the benchmark Grand Prix, but not giving up a ton of rolling resistance benefit.
I moved my 34 mm Corsa N.EXT to more reasonable 25 mm (inside) rims and the measured width came down to 35 mm. They're still about 30 mm high. They should measure their listed size on 22 or 23 mm rims. While they were off I measured 85 mm bead-to-bead.
BTW my 36 mm Strada Bianca Pro measure 100 mm bead-to-bead. They measure 38 mm wide on 25 mm rims and 40 mm wide on 30 mm rims, 33 mm high on both.
I'm running the 32mm version on my road bike with 19mm internal DT Swiss rims. After about 200 miles, the tires have settled to 32mm wide. From a performance perspective I have no complaints. In fact, I the only difference I can tell between these tires and the 28mm Conti GP5000s I took off is a bit more comfort on broken pavement. These tire were much easier to install than the old tires, but much harder to get sealed airtight.
GravelInSipsey wrote:I'm running the 32mm version on my road bike with 19mm internal DT Swiss rims. After about 200 miles, the tires have settled to 32mm wide. From a performance perspective I have no complaints. In fact, I the only difference I can tell between these tires and the 28mm Conti GP5000s I took off is a bit more comfort on broken pavement. These tire were much easier to install than the old tires, but much harder to get sealed airtight.
I went through hell getting N.EXT/700x32mm to properly seal on my road bike. After a number of tubeless blast cannister and CO2 attempts I gave up. I wound up finally getting an air compressor just to deal with things like this in the future.. but at the same time a set of GP5000 S-TR TL came in and mounted, sealed within minutes. The Vittoria Corsas are now sitting on a shelf.
After a week at 45/50 psi on 25 mm (inside) rims my 34 mm Corsa N.EXT have expanded to about 35.5 mm wide.
Today I tried them on an easy trail - partly hard dirt, partly soft dirt with bark and leaves, bone dry, some roots up to about 3", climbing doable in a 42T chainring / 30T cog. They were great on the hard parts but dug into the soft parts. No slipping and they made it over the roots with little discomfort and no bottoming out at road pressures 45/50 psi. My bigger tires are definitely faster on soft stuff but I was surprised by how well the Corsa did.
These tires interests me a lot. I only found them in 32, so I ended ordering a pair of Pirellis Cinturato 35, and because I don't want to risk dealing with punctures right now. They are tubeless, wish they had a lighter tubed version, because I'll use TPU tubes too.
After the Pirellis worn out a bit, I'll order these Vittorias to test and see how is the puncture resistance. Anecdotal evidence suggests that anything with "Graphene" from Vittoria punctures way less than the GP5000, despite they having the same score at BRR (around 50 points). Even the cheaper Zaffiro Pro gets really great reviews.
Please keep us updated! And may I ask, what's your weight? I weight 80+ (I'm tall), and unfortunately punctures are a bigger problem for me than for lighter cyclists.
BikeInn had the Corsa N.EXT 34 in stock, more than 50 units, and it was sold out incredibly fast, like the Pirelli Cinturato 35. While smaller tires seems to be stuck in stock for months... (yeah, with the parts shortage I developed the strange habit to follow stores stocks).
Looks like the demand for larger road tires is really high.
I have a set of tubeless 34s in the packaging to get rid of. The 32s will be big enough for me since they measure their labeled width on a set of 21 mm ID rims. I'm in Northern Illinois and could meet anywhere between Madison and Chicago when convenient. Otherwise they would be about $10 to ship. Send me a reasonable offer via the messaging here.
