Tire chat (nerds only)

AndehM
Posts
856
Joined
5/7/2018
Location
El Granada, CA, USA
Fantasy
9/20/2026 2:52pm
HarryMudd wrote:

We still looking at October for the DHX in EXO? 

Same question, but regarding MT for New DH.

9/20/2026 3:01pm
Fox wrote:
@schwalbai  or any others with insider knowledge at Schwalbe, is the Nobby Nic going to to be released in a radial casing? Or any Schwalbe in...

@schwalbai  or any others with insider knowledge at Schwalbe, is the Nobby Nic going to to be released in a radial casing? Or any Schwalbe in a trailish tread that will weigh 900 or so grams? I'm thinking of a Forecaster type tire...

 

The Nobby Nic in Trail Pro radial was shown in our Sea Otter Europe article from yesterday: https://www.vitalmtb.com/features/sea-otter-europe-2026-day-1

First tire on the left when you get to the pics.

7
9/21/2026 8:02am
Fox wrote:
@schwalbai  or any others with insider knowledge at Schwalbe, is the Nobby Nic going to to be released in a radial casing? Or any Schwalbe in...

@schwalbai  or any others with insider knowledge at Schwalbe, is the Nobby Nic going to to be released in a radial casing? Or any Schwalbe in a trailish tread that will weigh 900 or so grams? I'm thinking of a Forecaster type tire...

 

The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. 

A 29x2.4 Nobby Nic Trail Pro (11654142.02) weighs 1000g. Not a Radial though.

They 29x2.4 Romy Trail Pro Radial (1040g) is quick despite what you might think of the weight number, and it is great for trail riding. 

6
Whattheheel
Posts
229
Joined
6/11/2014
Location
Spearfish, SD, USA
9/21/2026 8:53am

Thank you Sir!!🍻

JVP
Posts
242
Joined
4/20/2016
Location
Bellingham, WA, USA
9/21/2026 9:20am
schwalbai wrote:
The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. A 29x2.4 Nobby...

The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. 

A 29x2.4 Nobby Nic Trail Pro (11654142.02) weighs 1000g. Not a Radial though.

They 29x2.4 Romy Trail Pro Radial (1040g) is quick despite what you might think of the weight number, and it is great for trail riding. 

Would you say pedaling speed is similar between 29x2.4 Nobby Nic Trail Pro and The 29x2.4 Romy Trail Pro Radial? Or does one have a noticeable edge? 

I'm nothigh but happy with the SuperTrail Soft Nic on the rear of my last-gen Optic but radial curious.

9/21/2026 9:43am
JVP wrote:
Would you say pedaling speed is similar between 29x2.4 Nobby Nic Trail Pro and The 29x2.4 Romy Trail Pro Radial? Or does one have a noticeable...

Would you say pedaling speed is similar between 29x2.4 Nobby Nic Trail Pro and The 29x2.4 Romy Trail Pro Radial? Or does one have a noticeable edge? 

I'm nothigh but happy with the SuperTrail Soft Nic on the rear of my last-gen Optic but radial curious.

Slight edge to a Nic for rolling speed. Could put it on the rear? I personally like the Diagonal / Radial  mixed setup.

Romy is much more grippy. For a bike like the optic, having romy on both wheels would fit the bikes capability well.


 

4
Evwan
Posts
167
Joined
11/18/2025
Location
Sunnyvale, CA, USA
Fantasy
9/21/2026 7:17pm
Eoin wrote:
So I can give a similar ride report for my continentals:2000km and 60km vert over 10 months (1,200 miles, 200k feet descending). No racing and no...

So I can give a similar ride report for my continentals:

2000km and 60km vert over 10 months (1,200 miles, 200k feet descending). No racing and no bike parks this year, but I ride hard enough.

Absolutely blown away by the Kryptotal rear downhill soft. That tyre has no right to still be alive today, with some side and middle knobs still present. The main issue is the casing, the grip itself is ok enough that I would run it until the rain comes in October.

PXL 20260917 065801473 0

My front tyre is actually a Krypto Rear downhill Supersoft on about 11 month old.
It actually wore down quite fast at the start and then kinda just stayed at a certain level of wear. I am going bach to Soft upfront as my previous front tyre effectively didn't wear and my guess is that near perfect harder side knobs are equivalent to softer worn out ones...

PXL 20260917 065806003.jpg?VersionId=5B6z

But actually this wasn't what I wanted to post, I actually came here to give a PSA:

If your tyres look good 6+ months after fitting them, instead of just bragging about it on forums, maybe take them off and do a sealant change, otherwise you might end up with this monstrosity:

 

PXL 20260917 065758304.MP .jpg?VersionId=vyq

Wasn't sure if this thread or the dumb bike problems was the correct one, and yes I could feel it but I thought it was the massive flat spot on my rim... Feel free to ignore all my tech advice in the future

I found that although the kryptotals still had knobs present after 50 bike park days, the grip on rock slabs was awful compared to new. Also the side knobs started to get ripped at the base which led to some untrustworthy cornering. 

The knobs still being present made me think, wow these last forever, but the performance was pretty bad toward the end of life. The conti supersoft rubber is hard compared to maxxis, and as you'd expect they roll pretty fast because of that. 

1
9/22/2026 5:37am

Now it's official, Pirelli has dropped the all-new Scorpion gravity range that we previewed in our Sea Otter Europe coverage. One of the more exciting aspects is seeing the supersoft compound on the lighter casings, that's always something many of us are looking for.

https://www.vitalmtb.com/news/press-release/pirelli-launches-all-new-scorpion-gravity-range 

4
9/22/2026 5:38am
Fox wrote:
@schwalbai  or any others with insider knowledge at Schwalbe, is the Nobby Nic going to to be released in a radial casing? Or any Schwalbe in...

@schwalbai  or any others with insider knowledge at Schwalbe, is the Nobby Nic going to to be released in a radial casing? Or any Schwalbe in a trailish tread that will weigh 900 or so grams? I'm thinking of a Forecaster type tire...

 

schwalbai wrote:
The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. A 29x2.4 Nobby...

The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. 

A 29x2.4 Nobby Nic Trail Pro (11654142.02) weighs 1000g. Not a Radial though.

They 29x2.4 Romy Trail Pro Radial (1040g) is quick despite what you might think of the weight number, and it is great for trail riding. 

Did I get it wrong in my post above? I was told at Sea Otter that all the tires on that rack were available in radial now...?

Schwalbe 0
ColinL
Posts
53
Joined
7/20/2015
Location
USA
9/22/2026 6:58am
Fox wrote:
@schwalbai  or any others with insider knowledge at Schwalbe, is the Nobby Nic going to to be released in a radial casing? Or any Schwalbe in...

@schwalbai  or any others with insider knowledge at Schwalbe, is the Nobby Nic going to to be released in a radial casing? Or any Schwalbe in a trailish tread that will weigh 900 or so grams? I'm thinking of a Forecaster type tire...

 

schwalbai wrote:
The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. A 29x2.4 Nobby...

The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. 

A 29x2.4 Nobby Nic Trail Pro (11654142.02) weighs 1000g. Not a Radial though.

They 29x2.4 Romy Trail Pro Radial (1040g) is quick despite what you might think of the weight number, and it is great for trail riding. 

iceman2058 wrote:
Did I get it wrong in my post above? I was told at Sea Otter that all the tires on that rack were available in radial...

Did I get it wrong in my post above? I was told at Sea Otter that all the tires on that rack were available in radial now...?

Schwalbe 0

at first I thought it was interesting that the QR code above the Nobby Nic doesn't go to a product webpage, just a QR placeholder site. but then I tried the others, which I know are current tires, and they are just placeholders also, maybe same the same non-functional QR - I didn't look closely.

aaronufl
Posts
50
Joined
3/7/2026
Location
Poulsbo, WA, USA
9/22/2026 7:27am
iceman2058 wrote:
Now it's official, Pirelli has dropped the all-new Scorpion gravity range that we previewed in our Sea Otter Europe coverage. One of the more exciting aspects...

Now it's official, Pirelli has dropped the all-new Scorpion gravity range that we previewed in our Sea Otter Europe coverage. One of the more exciting aspects is seeing the supersoft compound on the lighter casings, that's always something many of us are looking for.

https://www.vitalmtb.com/news/press-release/pirelli-launches-all-new-scorpion-gravity-range 

Interested in read some ride impressions on these. Nice to see lighter weight trail/Enduro tires with softer compounds.

Evil96
Posts
906
Joined
8/21/2014
Location
Portogruaro, VE, IT
9/22/2026 3:10pm
Fox wrote:
@schwalbai  or any others with insider knowledge at Schwalbe, is the Nobby Nic going to to be released in a radial casing? Or any Schwalbe in...

@schwalbai  or any others with insider knowledge at Schwalbe, is the Nobby Nic going to to be released in a radial casing? Or any Schwalbe in a trailish tread that will weigh 900 or so grams? I'm thinking of a Forecaster type tire...

 

schwalbai wrote:
The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. A 29x2.4 Nobby...

The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. 

A 29x2.4 Nobby Nic Trail Pro (11654142.02) weighs 1000g. Not a Radial though.

They 29x2.4 Romy Trail Pro Radial (1040g) is quick despite what you might think of the weight number, and it is great for trail riding. 

iceman2058 wrote:
Did I get it wrong in my post above? I was told at Sea Otter that all the tires on that rack were available in radial...

Did I get it wrong in my post above? I was told at Sea Otter that all the tires on that rack were available in radial now...?

Schwalbe 0

It says trail pro, not radial, trail pro can be radial or diagonal/normal

wakemitch
Posts
3
Joined
6/23/2026
Location
Bay Area, CA, USA
9/22/2026 9:54pm
schwalbai wrote:
The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. A 29x2.4 Nobby...

The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. 

A 29x2.4 Nobby Nic Trail Pro (11654142.02) weighs 1000g. Not a Radial though.

They 29x2.4 Romy Trail Pro Radial (1040g) is quick despite what you might think of the weight number, and it is great for trail riding. 

iceman2058 wrote:
Did I get it wrong in my post above? I was told at Sea Otter that all the tires on that rack were available in radial...

Did I get it wrong in my post above? I was told at Sea Otter that all the tires on that rack were available in radial now...?

Schwalbe 0
Evil96 wrote:

It says trail pro, not radial, trail pro can be radial or diagonal/normal

It also has the blue stripe which means it is not the soft or ultra soft compound like the other radials

9/23/2026 7:06am
schwalbai wrote:
The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. A 29x2.4 Nobby...

The Race Pro line will come out next year. For the most part this would be tires with the previous 'Super Race' Turn-Up casing. 

A 29x2.4 Nobby Nic Trail Pro (11654142.02) weighs 1000g. Not a Radial though.

They 29x2.4 Romy Trail Pro Radial (1040g) is quick despite what you might think of the weight number, and it is great for trail riding. 

iceman2058 wrote:
Did I get it wrong in my post above? I was told at Sea Otter that all the tires on that rack were available in radial...

Did I get it wrong in my post above? I was told at Sea Otter that all the tires on that rack were available in radial now...?

Schwalbe 0
Evil96 wrote:

It says trail pro, not radial, trail pro can be radial or diagonal/normal

This bit me when ordering the Romy/Tacky Chan "new" radials, since the 1st gen Schwalbe radials were all branded "pro". I totally thought pro == radial, which it does not.

1
ColinL
Posts
53
Joined
7/20/2015
Location
USA
9/23/2026 7:22am
iceman2058 wrote:
Did I get it wrong in my post above? I was told at Sea Otter that all the tires on that rack were available in radial...

Did I get it wrong in my post above? I was told at Sea Otter that all the tires on that rack were available in radial now...?

Schwalbe 0
Evil96 wrote:

It says trail pro, not radial, trail pro can be radial or diagonal/normal

wakemitch wrote:

It also has the blue stripe which means it is not the soft or ultra soft compound like the other radials

blue is mid which they say is just a renamed speedgrip. the romy was the first radial to get the mid compound, and it offers mid in the bias ply / diagonal casings also.

I saw in the pic that the eddy current is flipped around backwards relative to the other tires. whoops Smile

red= speed (xc)

blue= mid

orange= soft

purple= ultrasoft

1
9/24/2026 7:27am
Evil96 wrote:

It says trail pro, not radial, trail pro can be radial or diagonal/normal

wakemitch wrote:

It also has the blue stripe which means it is not the soft or ultra soft compound like the other radials

ColinL wrote:
blue is mid which they say is just a renamed speedgrip. the romy was the first radial to get the mid compound, and it offers mid...

blue is mid which they say is just a renamed speedgrip. the romy was the first radial to get the mid compound, and it offers mid in the bias ply / diagonal casings also.

I saw in the pic that the eddy current is flipped around backwards relative to the other tires. whoops Smile

red= speed (xc)

blue= mid

orange= soft

purple= ultrasoft

Anyone tried the Romy mid radial? I'm happy with the soft on the rear of my trail bike but am curious if mid is mid. Could also be good as a front tire on a downcountry bike.

2
rpearce1475
Posts
23
Joined
10/14/2015
Location
Bremerton, WA, USA
9/24/2026 8:10am
wakemitch wrote:

It also has the blue stripe which means it is not the soft or ultra soft compound like the other radials

ColinL wrote:
blue is mid which they say is just a renamed speedgrip. the romy was the first radial to get the mid compound, and it offers mid...

blue is mid which they say is just a renamed speedgrip. the romy was the first radial to get the mid compound, and it offers mid in the bias ply / diagonal casings also.

I saw in the pic that the eddy current is flipped around backwards relative to the other tires. whoops Smile

red= speed (xc)

blue= mid

orange= soft

purple= ultrasoft

Anyone tried the Romy mid radial? I'm happy with the soft on the rear of my trail bike but am curious if mid is mid. Could...

Anyone tried the Romy mid radial? I'm happy with the soft on the rear of my trail bike but am curious if mid is mid. Could also be good as a front tire on a downcountry bike.

I've run the diagonal mid on the rear a few times. It is fast rolling, decent grip, and tears side knobs quicker than the soft which has more of the expected wearing off than tearing off. Not sure if it's because the whole side knob is harder so it just rips off? I torched my first mid rear in ~75 miles and the second after one 25 mile ride. Schwalbe warrantied the second one (probably would have the first, I just didn't think to ask) with a soft compound rear which is wearing much better!

2
pursuitofnow
Posts
12
Joined
7/19/2020
Location
San Francisco, CA, USA
9/24/2026 9:51am

Just a side note... why do folks refer to radials but not bias-ply when distinguishing between the two tire type constructions? Non radial tires are bias-ply, but nobody ever refers to them as that. I've read them in this thread as "normal", "diagonal", etc. and just don't understand why there is confusion. Not to be overly pedantic, but this is a nerds thread...

2
1
ColinL
Posts
53
Joined
7/20/2015
Location
USA
9/24/2026 3:07pm
Just a side note... why do folks refer to radials but not bias-ply when distinguishing between the two tire type constructions? Non radial tires are bias-ply...

Just a side note... why do folks refer to radials but not bias-ply when distinguishing between the two tire type constructions? Non radial tires are bias-ply, but nobody ever refers to them as that. I've read them in this thread as "normal", "diagonal", etc. and just don't understand why there is confusion. Not to be overly pedantic, but this is a nerds thread...

true radial like a car tire is 90 degrees to the direction of rotation, which is horizontal. none of the mtb radial tires in production by any brand are like that, and they vary from 55-80 degrees.

traditional construction mtb tires are 45 degrees, which is diagonal to the direction of rotation.

so diagonal or bias ply are both right, and radial is not literally correct, it's just an obtuse angle. one might assume that schwalbe thought marketing tires as 'obtuse' would not be as effective as calling them 'radial'.

2
Fred_Pop
Posts
258
Joined
11/26/2017
Location
FR
9/25/2026 4:46am
Just a side note... why do folks refer to radials but not bias-ply when distinguishing between the two tire type constructions? Non radial tires are bias-ply...

Just a side note... why do folks refer to radials but not bias-ply when distinguishing between the two tire type constructions? Non radial tires are bias-ply, but nobody ever refers to them as that. I've read them in this thread as "normal", "diagonal", etc. and just don't understand why there is confusion. Not to be overly pedantic, but this is a nerds thread...

ColinL wrote:
true radial like a car tire is 90 degrees to the direction of rotation, which is horizontal. none of the mtb radial tires in production by...

true radial like a car tire is 90 degrees to the direction of rotation, which is horizontal. none of the mtb radial tires in production by any brand are like that, and they vary from 55-80 degrees.

traditional construction mtb tires are 45 degrees, which is diagonal to the direction of rotation.

so diagonal or bias ply are both right, and radial is not literally correct, it's just an obtuse angle. one might assume that schwalbe thought marketing tires as 'obtuse' would not be as effective as calling them 'radial'.

Vee tyre radials are 90º

pursuitofnow
Posts
12
Joined
7/19/2020
Location
San Francisco, CA, USA
9/25/2026 6:48am
Just a side note... why do folks refer to radials but not bias-ply when distinguishing between the two tire type constructions? Non radial tires are bias-ply...

Just a side note... why do folks refer to radials but not bias-ply when distinguishing between the two tire type constructions? Non radial tires are bias-ply, but nobody ever refers to them as that. I've read them in this thread as "normal", "diagonal", etc. and just don't understand why there is confusion. Not to be overly pedantic, but this is a nerds thread...

ColinL wrote:
true radial like a car tire is 90 degrees to the direction of rotation, which is horizontal. none of the mtb radial tires in production by...

true radial like a car tire is 90 degrees to the direction of rotation, which is horizontal. none of the mtb radial tires in production by any brand are like that, and they vary from 55-80 degrees.

traditional construction mtb tires are 45 degrees, which is diagonal to the direction of rotation.

so diagonal or bias ply are both right, and radial is not literally correct, it's just an obtuse angle. one might assume that schwalbe thought marketing tires as 'obtuse' would not be as effective as calling them 'radial'.

I guess you kind of proved my point. When talking about tires in a nerds thread and describing characteristics you like or dislike given a tire construction, it is useful to use shared vernacular so that it is less confusing which type of tire is being referred to.

1
1
ColinL
Posts
53
Joined
7/20/2015
Location
USA
9/25/2026 9:41am
Just a side note... why do folks refer to radials but not bias-ply when distinguishing between the two tire type constructions? Non radial tires are bias-ply...

Just a side note... why do folks refer to radials but not bias-ply when distinguishing between the two tire type constructions? Non radial tires are bias-ply, but nobody ever refers to them as that. I've read them in this thread as "normal", "diagonal", etc. and just don't understand why there is confusion. Not to be overly pedantic, but this is a nerds thread...

ColinL wrote:
true radial like a car tire is 90 degrees to the direction of rotation, which is horizontal. none of the mtb radial tires in production by...

true radial like a car tire is 90 degrees to the direction of rotation, which is horizontal. none of the mtb radial tires in production by any brand are like that, and they vary from 55-80 degrees.

traditional construction mtb tires are 45 degrees, which is diagonal to the direction of rotation.

so diagonal or bias ply are both right, and radial is not literally correct, it's just an obtuse angle. one might assume that schwalbe thought marketing tires as 'obtuse' would not be as effective as calling them 'radial'.

Fred_Pop wrote:

Vee tyre radials are 90º

maybe. that may just be a marketing claim as every review I've seen of the vee radial says that they feel mostly like a bias ply tire and not at all like a schwalbe radial. if it is 90 degrees, it's reinforced so much that it is no longer supple.

1

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