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WTB Vulpine SG2 gravel tyre review

WTB’s latest lightweight, race-ready offering

Our rating 
4.0 out of 5 star rating 4.0
GBP £55.00 RRP | USD $77.00 | EUR €66.00
WTB Vulpine SG2 tyre with 'bikeradar gravel week' overlay.

Our review

A specialised gravel tyre for racing and fast-paced rides over smooth terrain and dry conditions only
Pros: Straightforward setup; fast on tarmac and smooth gravel; great puncture resistance
Cons: Not suitable for use in the wet or mud
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One of the latest additions to WTB’s extensive gravel tyre line-up, the Vulpine is the brand’s race-ready option.

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The lightweight low-profile tyre utilises the brand’s SG2 puncture protection, and is designed specifically for fast-paced gravel riding on well-treated gravel roads.

Overall, the tyre has demonstrated real ability – delivering a reliable ride over smooth, dry terrain without compromising on speed.

WTB Vulpine SG2 specifications and details

WTB Vulpine SG2 gravel tyre
The Vulpine SG2 uses a slightly directional tread with almost continuous, low-profile tread blocks down the centre line.
Katherine Moore / Our Media

The Vulpine’s tread is characterised by a near-continuous line of directional, short-profile centre knobs.

These are flanked by smaller rectangular knobs, and short knobs complete the shoulder of the tread.

Here, WTB’s SG2 casing adds an extra Nylon puncture protection layer that extends from bead to bead.

Alternatively, you can shave off a claimed 28g per tyre by opting for the 60 TPI tan-sidewall option, which doesn’t have the puncture protection layer.

According to WTB’s recommendations, the Vulpine is suitable for hard and mixed terrain such as tarmac, hardpack dirt and gravel.

It’s not recommended for loose and wet conditions.

WTB Vulpine SG2 performance

WTB Vulpine SG2 gravel tyre
WTB’s SG2 range of tyres are all available with black sidewalls only.
Katherine Moore / Our Media

Comparable to other SG2 tyres from WTB (such as the Venture), tubeless setup was fairly straightforward and pain-free, fitting the tyres onto my WTB CZR i23 gravel wheels.

A shot of air from my Schwalbe Tire Booster at 120psi was enough to seal the bead onto the rim most of the way round, adding a few extra strokes from the track pump to become fully seated.

Inflated to 40psi, the tyres measured up at 39mm (front) and 39.5mm (rear).

The SG2 was tested on my usual local gravel loops on the edge of Dartmoor, UK, as well as on a bonus week’s holiday on mountain roads and gravel doubletrack in Sardinia. Touted as a race tyre, I was keen to see just how it performed at pace.

It was immediately evident that the lightly treaded tyre spins up to speed very quickly, both on the tarmac and when heading off it.

It certainly inspires you to push on, with no sensation of dragging or being overly grippy when you don’t need it in dry conditions on smoother terrain.

While the Vulpine tyre didn’t feel bad on chunkier trails, I’d definitely opt for a tyre with more defined tread if I was preparing for a gravel race that also featured technical riding, such as Grinduro’s singletrack sections.

Without any siping, it’s clear the Vulpine has been devised for use in the dry.

It felt a little slippy both on sections of wet rock and through the smaller patches of mud I encountered while testing.

As I’ve experienced with other SG2-equipped tyres, such as the WTB Venture and WTB Riddler, the puncture protection was excellent.

I didn’t experience a single loss of pressure, even after many miles on rockier Sardinian gravel lined with cacti and all manner of sharp, scratchy plants.

For racers (as the recent UCI The Gralloch gravel race evidenced well), being able to avoid a flat can make all the difference between a disappointing day out and staying in contention for a podium place.

Lightweight tyres may save you some seconds here and there, but puncture-resistant tyres have the capacity to save you minutes.

Nevertheless, the tyres are also fairly light at 453g, saving nearly 200g per pair compared to other all-rounders from the brand, including the WTB Riddler.

They’re 100g per pair lighter than the similarly race-centric Schwalbe G-One RS.

WTB Vulpine SG2 bottom line

WTB Vulpine SG2 gravel tyre
Unlike many of WTB’s tyres, the shoulder knobs of the Vulpine SG2 are fairly low-profile.
Katherine Moore / Our Media

WTB seems to have achieved what it set out to produce with the new Vulpine; a fast, reliable gravel tyre well suited to flat-out speed on well-conditioned, dry gravel tracks.

As with many things at the pointy end, these are far from fit-and-forget all-rounder tyres and are best suited to dry conditions.

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If you’re lucky enough to live somewhere dry and prefer less aggressively treaded gravel tyres, they could be for you.

Product Specifications


Price br_price, 5, 3, Price, EUR €66.00GBP £55.00USD $77.00
Weight br_weight, 5, 6, Weight, 461g (700 x 40c) – 453g claimed, Array, g
Brand br_brand, 5, 10, Brand, Wtb


Features br_Features, 11, 0, Features, Tubeless compatible
Black sidewall for SG2 tyres, lighter tan sidewall tyres also available for 60TPI standard tyres
TPI br_TPI, 11, 0, TPI, 120
Puncture protection br_punctureProtection, 11, 0, Puncture protection, SG2 bead to bead nylon insert for puncture protection
Sizes br_tyreSizes, 11, 0, Sizes, 700 x 40c and 700 x 36c