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650B Road Tires

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Old 05-22-18, 02:35 PM
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Goldrush
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650B Road Tires

So our new CoMo Carrera has 650B Spinergy wheels with Panaracer Gravel King 42 mm tires. The ride is real comfy and the set up is great for gravel grinders. However a lot of our riding is on the road and fat tires seem to take much more effort to move down the highway. I was thinking a road type tire at around 32 mm would take much less effort for a given speed. A google search comes up with no such tire, leaving the only option to get a set of 700c wheels. This would be pricey. Any ideas?
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Old 05-22-18, 02:45 PM
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With respect to rolling resistance, there aren't many tires that are considerably faster than the Gravel King (assuming you have the file tread version). I'd assume you're used to feeling road buzz with high pressure tires, but you're not feeling that any more. If practical, compare your speed on GPS to similar rides on your old bike.
Anyway, the Panaracer Pari Moto is slightly faster than the Gravel King. It's available in 650b x 38mm, 42mm, and 48mm.
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Old 05-23-18, 06:25 AM
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Originally Posted by Goldrush View Post
So our new CoMo Carrera has 650B Spinergy wheels with Panaracer Gravel King 42 mm tires. The ride is real comfy and the set up is great for gravel grinders. However a lot of our riding is on the road and fat tires seem to take much more effort to move down the highway. I was thinking a road type tire at around 32 mm would take much less effort for a given speed. A google search comes up with no such tire, leaving the only option to get a set of 700c wheels. This would be pricey. Any ideas?
Our friends use Schwalbe 26x1.1(28mm) on those wheels and 110 psi. Bike Tire Direct have them.
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Old 05-23-18, 06:46 AM
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Originally Posted by Artmo View Post


Our friends use Schwalbe 26x1.1(28mm) on those wheels and 110 psi. Bike Tire Direct have them.
If they would work it on my wheels it would be great, but my wheels are 650b which is not the same as 26 inch. Do you know the model of Schwalbe? This could save me quite a bit of money, as the other alternative is buying a set of 700c wheels.
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Old 05-23-18, 08:06 AM
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Originally Posted by Goldrush View Post
If they would work it on my wheels it would be great, but my wheels are 650b which is not the same as 26 inch. Do you know the model of Schwalbe? This could save me quite a bit of money, as the other alternative is buying a set of 700c wheels.
sorry, I thought 650b are smaller than 700c, but I now see they are not.
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Old 05-23-18, 08:54 AM
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Originally Posted by Goldrush View Post
If they would work it on my wheels it would be great, but my wheels are 650b which is not the same as 26 inch. Do you know the model of Schwalbe? This could save me quite a bit of money, as the other alternative is buying a set of 700c wheels.
I am confused, but I have an excuse as I'm 77!!

650b is SMALLER in rim diametet than 700c. I don't know why some are measuring overall diameter including tire, which makes 650b about 27.5 inches. I think a 650b tire is about the same as a 26 inch one, which is what my friend has on his Spinergy TX2 wheels: Schwalbe 26" x 1.1 inch(28mm).
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Old 05-23-18, 06:48 PM
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Originally Posted by Artmo View Post


Our friends use Schwalbe 26x1.1(28mm) on those wheels and 110 psi. Bike Tire Direct have them.
These should be the Schwalbe Durano tires. I have them for a 26 in single bike - very fast.
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Old 05-26-18, 12:05 AM
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Schwalbe G-One Speed, or Microskin. They come in a 27.5" x 1.5". Fast tyre.
27.5" is not the same as 26" or 700c. It is between the two.

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Old 05-26-18, 12:20 AM
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There are also a couple of Compass tires.

Compass 650Bx38 Loup Loup Pass
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Old 05-27-18, 05:15 AM
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Originally Posted by Dean V View Post
Schwalbe G-One Speed, or Microskin. They come in a 27.5" x 1.5". Fast tyre.
27.5" is not the same as 26" or 700c. It is between the two.
i always thought that tires are categorized by rim diameter, not by rim+tire. Iím still pretty sure that what the OP needs are 26x1.1 Schwalbe Durano tires on his Spinergy wheels.
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Old 05-27-18, 07:10 AM
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Originally Posted by Artmo View Post
i always thought that tires are categorized by rim diameter, not by rim+tire. Iím still pretty sure that what the OP needs are 26x1.1 Schwalbe Durano tires on his Spinergy wheels.
In ISO/ERTO sizing, 650B has rim diameter of 584mm. 650c is 571mm. 26" MTB size is 559mm. Marketing weenies has confused the issue by adding the term 27.5 (650b). 27.5+ is a wider/bigger version of 650b but not normally compatible with 650b due to rim width and frame clearance issues. And we won't get into 29" (700c) and 29"+

As I am in the process of looking for a "gravel" single, this is one of the stupidities one must wade through. Sheldon's website list all the sizes called 26x1.

Tire Sizing Systems
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Old 05-27-18, 12:09 PM
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The OP definitely states 650B.

It wouldn't hurt to verify, but I think at this point one should take his word for it.

One "standard" on modern bikes is that if the tires use a fractional inch PLUS a decimal width, then for at least the larger wheels, they will generally be 559 (26" MTB), 584 (650B, 27.5), or 622 (700c, 28", 29").

If it has a fractional inch diameter plus a fractional inch width, then it will be some vintage oddball.

It sounds like there are a few options for road 650b, but none of them are particularly narrow.
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Old 05-27-18, 07:56 PM
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The original poster stated purchasing a set of 700c wheel set to be able to go with the 32c tires. With disc brakes you can switch back and forth between 650b and 700c. Switching back and forth would be an option or moving to one of the faster filing 650 tires mentioned.
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Old 05-27-18, 09:32 PM
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Originally Posted by Goldrush View Post
So our new CoMo Carrera has 650B Spinergy wheels with Panaracer Gravel King 42 mm tires. The ride is real comfy and the set up is great for gravel grinders. However a lot of our riding is on the road and fat tires seem to take much more effort to move down the highway. I was thinking a road type tire at around 32 mm would take much less effort for a given speed. A google search comes up with no such tire, leaving the only option to get a set of 700c wheels. This would be pricey. Any ideas?
The Grand Bois Cypres (32mm) is still made in 650B.
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Old 05-27-18, 09:43 PM
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Originally Posted by ThermionicScott View Post
The Grand Bois Cypres (32mm) is still made in 650B.
Source? Iím pretty sure those were discontinued a few years ago.
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Old 05-27-18, 09:54 PM
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Originally Posted by OneIsAllYouNeed View Post
Source? Iím pretty sure those were discontinued a few years ago.
Compass no longer imports them, but they are far from discontinued. Here's the Grand Bois site: ??? | Tire CYCLES GRAND BOIS ? ?????(CyclesGrandBois web-shop)

They can be ordered direct from Japan, or there's a guy in Minnesota who is setting up a new distributorship if you're interested.
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Old 06-25-18, 05:40 AM
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Here is some miscellaneous tires experience in our odyssey with 650B conversion of one of our tandems:
  • We are currently riding Compass Loup Loup Pass in 650B X 38. Nice road tire. Stable on dirt roads/gravel.
  • Have a pair of Panaracer Pacenti Pari-Moto 650B X 38 in reserve, but unridden. These appear to be identical tires to those above, from the Panaracer factory.
  • Have ridden Schwalbe One-G in 650B X 40 (actually and weirdly, these are labeled both "650B X 38" and "40-584"); nice mild knobby tread pattern and a very nice ride, but expensive ($65 each?), and our bike has insufficient clearance for this tire on the rear (anybody want to buy a pair, one slightly used, one new?). Oh, and this one is quite clearly optimized for tubeless, though we don't do that.
  • Have ridden Panaracer Col de la Vie in 650B X 38. These have a bit more tread pattern and are cheaper than the other two, and have a really nice ride. Beware, however, that they have a fairly low max pressure rating, ca. 45 psi, IIRC, and I blew one out before I thought to read the sidewall ("300 kPa"). Probably not an option for most tandem teams.

Last edited by 2frmMI; 07-02-18 at 07:34 PM. Reason: Corrected pressure from 3.0 to 300 kPa. D'oh.
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