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Exactly! Sets expectations appropriately. I'll still use Rekons, dissectors, etc. They are great tires and weight competitive with their peers.

But I don't want an 820gram XC tire that is basically a semi slick... (Rekon race 2.4). I'd either have more grip for the same weight, or a significantly lighter tire that is still durable (Specialized Fast Trak/Renegade, Vittoria, etc).

I don't know how the Ikon 2.35 has managed to gain SO much weight. Must be the molds getting old/enlarged.

I've actually had decent luck with the new gel Specialized tires. Just mounted up some 2.35 Fast Traks T5 and 2.35 GC T5. Both came in a 2.36" on an ID 29mm rim after stretching.

That said... put some Maxxis Aspen 2.25 on my wife's race wheels last weekend and they were 2.38", lol. Many grains of salt needed with respect to MFG claims.
 
That said... put some Maxxis Aspen 2.25 on my wife's race wheels last weekend and they were 2.38", lol. Many grains of salt needed with respect to MFG claims.
That's awesome. I'd take that any day unless I had chainstay clearance issues. That's the only time being over sized would actually piss me off.

Check out my post 29er tire weight list on the Rekon Race 2.4. Now this is on my xc/trail bike which where i ride is mostly dry moon dust over hardpack or bentonville but the tire has held up really well. I guess I don't need that much "bite" where i ride. And seriously like the volume with the 120tpi makes these tires hands down my favs. these days. The were both sub 800g and actually by day 3 the rear one blew up to 2.51 on 30mm. As a long time schwalbe / specialized tire lover, I am now on this maxxis fan boi boat. I just wish they didnt' look like a damn nascar tire.. The horrible ugly yellow MAXXIS and then all their acronyms looks like something straight out of nascar or idiocracy. That's one area I like where specialized is going. They have nice minimal branding now. Speaking of specialized at the last two world cups I've seen "the captain" tire on the rear of a few specialzeds riders bikes. Looks like they are bringing that tire back and am curious of what it's going to be about.
 
Where do you put Terravail? In the smaller sizes Vittoria actually comes out larger. Their 35mm Terreno & Mezcal models come out to 37-38mm depending on rim(which has cause some cs issues on friends cx bikes). Their 38mm Terreno has an ertto of 40mm but on some rims out to 41mm. Not sure about the new 700x47mm version of Terreno, or 44mm Mezcal as those just came out.
 
So I guess it's only the new generation fast traks that are coming in undersized for specialized. I picked up a ground control 2.35 for an upcoming trip to the mountains and I am impressed. Not only did this new generation GC grid t7 come in bang on in advertised weight, but actually blowing up pretty damn large to my delight. 2.35 is blowing up to 2.44 on my 30mm IW rims.

Advertised Specs:
  • Ground Control Grid 2Bliss Ready T7
  • 29 x 2.35", PSI 25-50, approximate weight 870g.
Actual Specs:
width on 30mm IW rim = 2.44
weight = 873g

Kudos on that one spesh.

Also included previous gen vs new gen tread pattern:



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In my experience it is only the Control casing that won't stretch to 2.35 on the FastTrak. The Grid casing had no issues plumping up to over 2.35 within a 24 hours.
Yeah but that's just for them to get to "advertised" size. I don't like running anything under 2.4's. I like the new tread on the new fast tracks as it's very much like the rocket ron. However, I was hoping that their 2.35 ft's would blow up to at least 2.4 on 30mm rims, in which they don't. Regardless of casing. So it's like this. I mean it's not bad that specialized is dead on spec's with the FT's, I am just used to their tires blowing up bigger. For example

2.35 gc's = blow up to 2.44
2.35 ft's = blow up to 2.35
previous gen 2.30 (notice that's .30 and not .35) ft's = blow up to 2.41 on my rims. So their previous gen were actually stamped/advertised to be smaller ertro but actually blew up larger than the current gen.

Doesn't matter too much for me though now, as I have found my great XC/XCM wide fast tire in the Rekon Race. Light and very supple and blow up to 2.5 on my rims.

The gc's I am only using for more "trail" all mountain stuff.

(y)
 
They had a 2.4 Rocket Ron back in the 26" days. People loved that tire. 29" has always been stuck with 2.25 which was good enough for some people but I would have loved a 2.35/2.4 in 29er format a couple years ago.
 
That's really light for 2.4's.. Those tires are like vaporware here in the USA. Like really tough to find. The tread pattern looks like a rekon race. Please throw some calipers on those to see if they get to 2.4 or wider and let us know what size (inner width) rims you put them on.

Thanks,
 
Just bought a brand new Bontrager SE4 29x2.4 and came across this thread, so figured I'd contribute a few weights I have off hand:

Bontrager SE4 29x2.4 - Claimed 905g / Measured at 938g (brand new)
Bontrager XR4 29x2.4 - Claimed 800g / Measured at 825g (has probably 50 miles on it, but I cleaned it up pretty good and it still looks great, so don't expect it would have measured much different when new)

Maxxis DHR2 Exo 3C 29x2.4 (I've had it laying around a year or two) - Measured at ~999 grams (new, never ridden)
 
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