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WTB Nano 700c TCS Light SG2 Gravel Tire
WTB Nano 700c TCS Light SG2 Gravel Tire
WTB Nano 700c TCS Light SG2 Gravel Tire

WTB Nano 700c TCS Light SG2 Gravel Tire

Mfg PartNum:W010-0847
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The WTB Nano 40 is built for speed—added SG2 Protection will keep you hammering

A nearly uninterrupted centerline provides swift efficiency on hardpack terrain while staggered outer knobs allow you to stay on the gas while mashing up chunky climbs or hanging on through loose gravel corners.

The high-volume 40mm casing allows for lower tire pressures and a smoother ride while still reducing drag and rolling resistance. This makes for an all-out gravel destroyer that still appeases those clamoring for a truly big cyclocross tire. Everybody's irrefutable favorite, 'nough said.

Take your tires to the next level with SG2

This version of the Nano features WTB's all-new SG2 puncture protection. This new protection layer is a lightweight, ultra-thin nylon insert that provides bead-to-bead coverage to ensure all surfaces of the tire are provided with an additional level of defense against punctures.

Exactly how much more durable are they? Lab tests show the addition of the bead-to-bead SG2 puncture protection layer to a 120tpi casing provides 33% more sidewall protection and 17% more tread protection than the standard 60tpi offerings without SG2.

While SG2 is primarily a puncture protection layer, its tightly woven fibers also improve air retention, which prevents seeping at the sidewall and helps maintain pressure between rides.


  • A dense dual DNA centerline keeps these tires fast on the hardpack the aggressive side knows are grippy in the loose
  • Super-supple 120tpi casing
  • Tubeless-ready
  • Extra-durable SG2 Puncture Protection to keep you rolling over the most demanding terrain

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

Mfg PartNum: W010-0847 

Threads Per Inch: 120 

Tire Type: Tubeless Ready 

Wheel Size: 700C/29" (ISO 622) 

Tire Width: 40mm (1.6in) 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Reviewed 2/26/2021
by JP
Cycling Enthusiast
Indianapolis, IN
Value Rating
Overall Rating
Wish I could try these properly...

I really, really wanted to give these tires a go but the sidewalls are so thin that the tire flops around all over the place when you are trying to mount for a tubeless setup. I tried everything I could practically think of but tubeless is seemingly impossible for these tires. I would return/exchange except I've had these for a long while collecting dust as I thought I could win this battle. Now I guess I'll try and sell them at a loss. Not sure I'll be trying another WTB tire on my dime. I'm sure they are a nice tire but I didn't buy them to run with tubes for my first tubeless setup. I ended up trying a tire from a different brand and the process was so easy. Maybe a strap around this tire would help or maybe one of the foam liners for flat protection would make things easier but at this point I'm cutting my losses.

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Reviewed 1/11/2021
by Tim R
Cycling Enthusiast
Beautiful East Dallas, Texas
Value Rating
Overall Rating
I like it ... ah lot

Are you looking for Jeep tires for your gravel bike? These are them.

Are you single-track-on-your-gravel-bike-curious? They do that.

Do you like to taunt roadies with that "rahr, rahr, rahr" sound as you creep up on them? These are for that too.

They are my goto all road tire for daily ramblings. I don't ride a mountain bike, I just pretend my carbon fork is invincible...

Now, the things they are not the best at:

* Fast cornering through sketchy, soupy gravel

* Mud - like most gravel tires, they don't shed mud very well

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Reviewed 1/7/2021
by LSch
Casual Cyclist
Value Rating
Overall Rating
Perfect Substitution

I bought these WTB Nano 700c TCS Light SG2 Gravel Tires to replace a more aggressive tire. Rode more on a combination of gravel/pavement/cement, and I just wanted something a little faster/smoother. These WTB Nano's still provide the grip I like like/need but also have increased my speed a touch and provide better efficiency.

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