Tire chat (nerds only)

Evil96
Posts
802
Joined
8/21/2014
Location
Portogruaro, VE IT
6/6/2026 3:14am
dedge wrote:
I have the same hesitation, except that those tires will be for a Downcountry bike, for rocky and rooty trail, mostly dry or lightly damp. Still...

I have the same hesitation, except that those tires will be for a Downcountry bike, for rocky and rooty trail, mostly dry or lightly damp. Still hesitating between Tacky Chan/Romy, Kryptotal/Magnotal, Dissector/Rekon or Dissector/Forekaster

on such a bike i'd go Romy Diagonal Race front and Wicked will rear 

1
dedge
Posts
4
Joined
3/12/2015
Location
TLS FR
6/6/2026 3:24am

The thing is that I already have a wheelset with Racing Ray/Racing Ralph, I am searching for a secondary wheelset for more agressive riding in the mountain.

I fear that Romy/Wicked Will won’t be a huge improvement, but I have never tried those I admit

1
Gmoney
Posts
3
Joined
6/6/2026
Location
Mccall, ID US
6/6/2026 4:23am Edited Date/Time 6/6/2026 4:26am
schwalbai wrote:
The Big Betty is a great tire for those who are putting lots of energy/weight into it. Like most rear tires, it rewards those who ride...

The Big Betty is a great tire for those who are putting lots of energy/weight into it. Like most rear tires, it rewards those who ride rail-to-rail with fast rolling and sturdy grip when cornering. 
In off-camber terrain it can loose it's footing. This is where the Tacky Chan comes in.

The Tacky Chan development actually started from modified Big Bettys cut by the Commencal Muc-Off team.
They would narrow every 3rd center knob for better grip in off-camber and improved cleaning for wet conditions.
Every second side knob was also hollowed out. This makes initiating corners easier. Hold is also improved in variable conditions when cornering.

image-20240517155746-1

The Tacky Chan has since been further refined, but the core concepts are still there.

Great post! I have a trail and gravity casing 2.6 Big Bettys (soft) waiting in the wings, which I planned to start using. But over recent years I've seen a few references to the shortcomings of the BB, and of course now it's been discontinued,,,which doesn't give me the utmost confidence. What's confusing is that I've seen references to pro riders finding the corner knobs too supportive and unforgiving if they got off line, so they were reducing/cutting down the corner lug height, which doesn't fully add up. Further confusing, the Tacky Chan seems to be the evolution of the BB, but then why are the corner lugs so massive...on the latest 2.5 Radial (which I LOVE as a front in loose conditions), the corner lugs measure something like 7.75MM, and are very well supported...so why are they so big? I was staying away from running TC in the rear, thinking I'm "supposed" to run a rear tire with less aggressive cornering lugs, not more aggressive than my front tire.

I picked up the BB tires because the corner lugs looked about perfect for what I was looking for...6mm in height, and I liked the spacing (good all around, but probably too tight to clear mud well). And certainly the corner lugs are stiff and well supported...which I "thought" was what I was looking for.

I don't know, any further insight would be helpful, thank you!

afreak
Posts
17
Joined
11/4/2025
Location
Big Sky, MT US
6/6/2026 6:39am
schwalbai wrote:
The Big Betty is a great tire for those who are putting lots of energy/weight into it. Like most rear tires, it rewards those who ride...

The Big Betty is a great tire for those who are putting lots of energy/weight into it. Like most rear tires, it rewards those who ride rail-to-rail with fast rolling and sturdy grip when cornering. 
In off-camber terrain it can loose it's footing. This is where the Tacky Chan comes in.

The Tacky Chan development actually started from modified Big Bettys cut by the Commencal Muc-Off team.
They would narrow every 3rd center knob for better grip in off-camber and improved cleaning for wet conditions.
Every second side knob was also hollowed out. This makes initiating corners easier. Hold is also improved in variable conditions when cornering.

image-20240517155746-1

The Tacky Chan has since been further refined, but the core concepts are still there.

Gmoney wrote:
Great post! I have a trail and gravity casing 2.6 Big Bettys (soft) waiting in the wings, which I planned to start using. But over recent...

Great post! I have a trail and gravity casing 2.6 Big Bettys (soft) waiting in the wings, which I planned to start using. But over recent years I've seen a few references to the shortcomings of the BB, and of course now it's been discontinued,,,which doesn't give me the utmost confidence. What's confusing is that I've seen references to pro riders finding the corner knobs too supportive and unforgiving if they got off line, so they were reducing/cutting down the corner lug height, which doesn't fully add up. Further confusing, the Tacky Chan seems to be the evolution of the BB, but then why are the corner lugs so massive...on the latest 2.5 Radial (which I LOVE as a front in loose conditions), the corner lugs measure something like 7.75MM, and are very well supported...so why are they so big? I was staying away from running TC in the rear, thinking I'm "supposed" to run a rear tire with less aggressive cornering lugs, not more aggressive than my front tire.

I picked up the BB tires because the corner lugs looked about perfect for what I was looking for...6mm in height, and I liked the spacing (good all around, but probably too tight to clear mud well). And certainly the corner lugs are stiff and well supported...which I "thought" was what I was looking for.

I don't know, any further insight would be helpful, thank you!

Just mount em up and shred the shit out of them, they’ll be fine. 

5
Evil96
Posts
802
Joined
8/21/2014
Location
Portogruaro, VE IT
6/6/2026 1:44pm
dedge wrote:
The thing is that I already have a wheelset with Racing Ray/Racing Ralph, I am searching for a secondary wheelset for more agressive riding in the...

The thing is that I already have a wheelset with Racing Ray/Racing Ralph, I am searching for a secondary wheelset for more agressive riding in the mountain.

I fear that Romy/Wicked Will won’t be a huge improvement, but I have never tried those I admit

then it makes sense for the other more aggressive options

1
Teknik
Posts
36
Joined
7/27/2021
Location
FI
6/7/2026 2:28am Edited Date/Time 1 day ago

After a couple of seasons riding on my DH bike with Michelin DH22/DH34 and DH22/DH16 combos, I moved to Schwalbe:

SCHWALBE Magic Mary Gravity Pro 29 x 2.50 | Ultra Soft Radial TLR | black - front
SCHWALBE Tacky Chan Gravity Pro 29 x 2.50 | SOFT RADIAL TLR | black - rear

As I'm waiting for the tires to arrive, it would be nice to hear what the possible changes will be? I've been riding 1,6bar (23,2psi) pressure.

Gmoney
Posts
3
Joined
6/6/2026
Location
Mccall, ID US
1 day ago Edited Date/Time 1 day ago
Teknik wrote:
After a couple of seasons riding on my DH bike with Michelin DH22/DH34 and DH22/DH16 combos, I moved to Schwalbe:SCHWALBE Magic Mary Gravity Pro 29 x...

After a couple of seasons riding on my DH bike with Michelin DH22/DH34 and DH22/DH16 combos, I moved to Schwalbe:

SCHWALBE Magic Mary Gravity Pro 29 x 2.50 | Ultra Soft Radial TLR | black - front
SCHWALBE Tacky Chan Gravity Pro 29 x 2.50 | SOFT RADIAL TLR | black - rear

As I'm waiting for the tires to arrive, it would be nice to hear what the possible changes will be? I've been riding 1,6bar (23,2psi) pressure.

Nice...that's what I'm talking about!

I'm not sure why more people don't run the Tacky Chan up front...with this new design on the 2.5 Radial, I suspect we'll see more people doing that! The MM sample I have weighs 1,460g, and the TC weighs 1430g, so it's fairly stout. I actually "suspect" you'll end up running the same pressures as you did before...as I'm really not sure the "add 3 psi" rule-of-thumb is going to apply with the Gen 2 Gravity casing. Maybe add 1. 

1
1 day ago
Teknik wrote:
After a couple of seasons riding on my DH bike with Michelin DH22/DH34 and DH22/DH16 combos, I moved to Schwalbe:SCHWALBE Magic Mary Gravity Pro 29 x...

After a couple of seasons riding on my DH bike with Michelin DH22/DH34 and DH22/DH16 combos, I moved to Schwalbe:

SCHWALBE Magic Mary Gravity Pro 29 x 2.50 | Ultra Soft Radial TLR | black - front
SCHWALBE Tacky Chan Gravity Pro 29 x 2.50 | SOFT RADIAL TLR | black - rear

As I'm waiting for the tires to arrive, it would be nice to hear what the possible changes will be? I've been riding 1,6bar (23,2psi) pressure.

I'm going to assume you're going to run the tc in back and that's just a typo. But I find the schwalbe tires to be somewhat similiar to the 22/16 combo you mentioned, just a little less on on the spectrum of gnarly. I found the TC to roll faster, have a bit softer casing, and not bite as much under braking compared to the 16. The side knobs felt stiffer to me when turning compared to the 16 though. I haven't ridden the lastest radial MM, but the previous version I thought had a lot less sidewall support than the 22s.

1
TEAMROBOT
Posts
1441
Joined
9/2/2009
Location
Los Angeles, CA US
Fantasy
1 day ago Edited Date/Time 1 day ago

Honest question for the peanut gallery: anyone have any advice for picking the Kryptotal Front vs. Rear as a rear tire?

I've only ever used the Kryptotal Front DH Super Soft, and it's been great as a rear tire. Super long lasting, fast rolling, and accceptable braking, cornering, and casing. Curious if I'm missing out on anything by not using the "Rear" tire as a rear tire.

112079 0
Kryptotal Front
continental-mtb-reifen-mtb-tire-kryptotal-re-enduro-1-1906527043
Kryptotal Rear
yzedf
Posts
251
Joined
1/27/2015
Location
Hebron, CT US
Fantasy
1 day ago
TEAMROBOT wrote:
Honest question for the peanut gallery: anyone have any advice for picking the Kryptotal Front vs. Rear as a rear tire?I've only ever used the Kryptotal...

Honest question for the peanut gallery: anyone have any advice for picking the Kryptotal Front vs. Rear as a rear tire?

I've only ever used the Kryptotal Front DH Super Soft, and it's been great as a rear tire. Super long lasting, fast rolling, and accceptable braking, cornering, and casing. Curious if I'm missing out on anything by not using the "Rear" tire as a rear tire.

112079 0
Kryptotal Front
continental-mtb-reifen-mtb-tire-kryptotal-re-enduro-1-1906527043
Kryptotal Rear

The rear specific tire is lighter and flimsier. Never seen a casing break in and become so much more pliable before. I nuked a rim before I figured out I needed a 2-3psi more pressure than the dhr2 I had used before. 

1
1
snowsnakes
Posts
82
Joined
6/5/2025
Location
Anchorage, AK US
1 day ago
Teknik wrote:
After a couple of seasons riding on my DH bike with Michelin DH22/DH34 and DH22/DH16 combos, I moved to Schwalbe:SCHWALBE Magic Mary Gravity Pro 29 x...

After a couple of seasons riding on my DH bike with Michelin DH22/DH34 and DH22/DH16 combos, I moved to Schwalbe:

SCHWALBE Magic Mary Gravity Pro 29 x 2.50 | Ultra Soft Radial TLR | black - front
SCHWALBE Tacky Chan Gravity Pro 29 x 2.50 | SOFT RADIAL TLR | black - rear

As I'm waiting for the tires to arrive, it would be nice to hear what the possible changes will be? I've been riding 1,6bar (23,2psi) pressure.

Gmoney wrote:
Nice...that's what I'm talking about!I'm not sure why more people don't run the Tacky Chan up front...with this new design on the 2.5 Radial, I suspect...

Nice...that's what I'm talking about!

I'm not sure why more people don't run the Tacky Chan up front...with this new design on the 2.5 Radial, I suspect we'll see more people doing that! The MM sample I have weighs 1,460g, and the TC weighs 1430g, so it's fairly stout. I actually "suspect" you'll end up running the same pressures as you did before...as I'm really not sure the "add 3 psi" rule-of-thumb is going to apply with the Gen 2 Gravity casing. Maybe add 1. 

I tried the non-radial TC as a front tire, and found the extreme ramping and wide spacing to cause it to carve either left or right instead of tracking straight, and far too much transition gap unless you went “full commit”. However, I am really excited to try the radial 2.5 up front - I think it will be better in both regards. 

TEAMROBOT
Posts
1441
Joined
9/2/2009
Location
Los Angeles, CA US
Fantasy
1 day ago
yzedf wrote:
The rear specific tire is lighter and flimsier. Never seen a casing break in and become so much more pliable before. I nuked a rim before...

The rear specific tire is lighter and flimsier. Never seen a casing break in and become so much more pliable before. I nuked a rim before I figured out I needed a 2-3psi more pressure than the dhr2 I had used before. 

Thanks for the feedback. You said "The rear specific tire is lighter and flimsier." Have you tried the front specific tire in the rear, too?

yzedf
Posts
251
Joined
1/27/2015
Location
Hebron, CT US
Fantasy
1 day ago
yzedf wrote:
The rear specific tire is lighter and flimsier. Never seen a casing break in and become so much more pliable before. I nuked a rim before...

The rear specific tire is lighter and flimsier. Never seen a casing break in and become so much more pliable before. I nuked a rim before I figured out I needed a 2-3psi more pressure than the dhr2 I had used before. 

TEAMROBOT wrote:

Thanks for the feedback. You said "The rear specific tire is lighter and flimsier." Have you tried the front specific tire in the rear, too?

I have. I only liked it in the dry, it packed up in the wet unless I could really open it up. Not ideal for me locally. 

My current setup is HR3 front DD and DHR2 DH both with Cush Core. Much better when things get slimy, which is too often. 

1
schwalbai
Posts
67
Joined
4/14/2023
Location
Victoria, BC CA
Fantasy
20 hours ago
schwalbai wrote:
The Big Betty is a great tire for those who are putting lots of energy/weight into it. Like most rear tires, it rewards those who ride...

The Big Betty is a great tire for those who are putting lots of energy/weight into it. Like most rear tires, it rewards those who ride rail-to-rail with fast rolling and sturdy grip when cornering. 
In off-camber terrain it can loose it's footing. This is where the Tacky Chan comes in.

The Tacky Chan development actually started from modified Big Bettys cut by the Commencal Muc-Off team.
They would narrow every 3rd center knob for better grip in off-camber and improved cleaning for wet conditions.
Every second side knob was also hollowed out. This makes initiating corners easier. Hold is also improved in variable conditions when cornering.

image-20240517155746-1

The Tacky Chan has since been further refined, but the core concepts are still there.

Gmoney wrote:
Great post! I have a trail and gravity casing 2.6 Big Bettys (soft) waiting in the wings, which I planned to start using. But over recent...

Great post! I have a trail and gravity casing 2.6 Big Bettys (soft) waiting in the wings, which I planned to start using. But over recent years I've seen a few references to the shortcomings of the BB, and of course now it's been discontinued,,,which doesn't give me the utmost confidence. What's confusing is that I've seen references to pro riders finding the corner knobs too supportive and unforgiving if they got off line, so they were reducing/cutting down the corner lug height, which doesn't fully add up. Further confusing, the Tacky Chan seems to be the evolution of the BB, but then why are the corner lugs so massive...on the latest 2.5 Radial (which I LOVE as a front in loose conditions), the corner lugs measure something like 7.75MM, and are very well supported...so why are they so big? I was staying away from running TC in the rear, thinking I'm "supposed" to run a rear tire with less aggressive cornering lugs, not more aggressive than my front tire.

I picked up the BB tires because the corner lugs looked about perfect for what I was looking for...6mm in height, and I liked the spacing (good all around, but probably too tight to clear mud well). And certainly the corner lugs are stiff and well supported...which I "thought" was what I was looking for.

I don't know, any further insight would be helpful, thank you!

+1 on mount and shred them!

I think the unforgiving cornering you reference has more to do with the overall knobs geometry than just the height.
Big Betty sideknobs are quite square and wide. Whereas the TC, with a more open leading edge corner, allows corner entry to be less aburpt. 
Also now that the TC has a more widley spaced pattern on the tread cap for the 2.5" radial version, it also has less off a dead spot. When you add in the radial casing defelction, it's pretty much elimianted.

Compare that to the cornering behaviour of a Big Betty, it was very on/off, and i think many riders would get lost in that dead spot. Not what you want in a front tire.

Thanks for bringing back an old post!

3
20 hours ago

@schwalbai Do you have any idea if this tread pattern is going to be released in 2026 ? 

p5pb28424108
1
schwalbai
Posts
67
Joined
4/14/2023
Location
Victoria, BC CA
Fantasy
20 hours ago
mntnmrtn wrote:
@schwalbai Do you have any idea if this tread pattern is going to be released in 2026 ? 

@schwalbai Do you have any idea if this tread pattern is going to be released in 2026 ? 

p5pb28424108

🤷‍♂️

4
Gmoney
Posts
3
Joined
6/6/2026
Location
Mccall, ID US
5 minutes ago
schwalbai wrote:
The Big Betty is a great tire for those who are putting lots of energy/weight into it. Like most rear tires, it rewards those who ride...

The Big Betty is a great tire for those who are putting lots of energy/weight into it. Like most rear tires, it rewards those who ride rail-to-rail with fast rolling and sturdy grip when cornering. 
In off-camber terrain it can loose it's footing. This is where the Tacky Chan comes in.

The Tacky Chan development actually started from modified Big Bettys cut by the Commencal Muc-Off team.
They would narrow every 3rd center knob for better grip in off-camber and improved cleaning for wet conditions.
Every second side knob was also hollowed out. This makes initiating corners easier. Hold is also improved in variable conditions when cornering.

image-20240517155746-1

The Tacky Chan has since been further refined, but the core concepts are still there.

Gmoney wrote:
Great post! I have a trail and gravity casing 2.6 Big Bettys (soft) waiting in the wings, which I planned to start using. But over recent...

Great post! I have a trail and gravity casing 2.6 Big Bettys (soft) waiting in the wings, which I planned to start using. But over recent years I've seen a few references to the shortcomings of the BB, and of course now it's been discontinued,,,which doesn't give me the utmost confidence. What's confusing is that I've seen references to pro riders finding the corner knobs too supportive and unforgiving if they got off line, so they were reducing/cutting down the corner lug height, which doesn't fully add up. Further confusing, the Tacky Chan seems to be the evolution of the BB, but then why are the corner lugs so massive...on the latest 2.5 Radial (which I LOVE as a front in loose conditions), the corner lugs measure something like 7.75MM, and are very well supported...so why are they so big? I was staying away from running TC in the rear, thinking I'm "supposed" to run a rear tire with less aggressive cornering lugs, not more aggressive than my front tire.

I picked up the BB tires because the corner lugs looked about perfect for what I was looking for...6mm in height, and I liked the spacing (good all around, but probably too tight to clear mud well). And certainly the corner lugs are stiff and well supported...which I "thought" was what I was looking for.

I don't know, any further insight would be helpful, thank you!

schwalbai wrote:
+1 on mount and shred them!I think the unforgiving cornering you reference has more to do with the overall knobs geometry than just the height.Big Betty...

+1 on mount and shred them!

I think the unforgiving cornering you reference has more to do with the overall knobs geometry than just the height.
Big Betty sideknobs are quite square and wide. Whereas the TC, with a more open leading edge corner, allows corner entry to be less aburpt. 
Also now that the TC has a more widley spaced pattern on the tread cap for the 2.5" radial version, it also has less off a dead spot. When you add in the radial casing defelction, it's pretty much elimianted.

Compare that to the cornering behaviour of a Big Betty, it was very on/off, and i think many riders would get lost in that dead spot. Not what you want in a front tire.

Thanks for bringing back an old post!

Great thread, and great feed back, thank you! I feel like a proper tire nerd already!

Okay, so I rock the Big Betty! Likely I'll run in Squamish and BC Bike parks this summer...thinking it will be good there. Problem is, I already have a couple variants of the Tacky in soft compound, for rear tire use, in route. So I don't know if I can get enough riding time to burn them all up...it's quite the problem. But I'll try!

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