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Panaracer GravelKing EXT+ TLC folding tyre



Limited width options, but they work really well on wet, slippery gravel trails
Tread copes with winter
Decent value
Easy to fit tubeless
38mm maximum width

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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The Panaracer GravelKing EXT+ TLC copes with British conditions really well thanks to a deeper tread than the rest of the range and increased puncture protection. They are well priced too, but wider sizes would be welcome.

I've used pretty much the whole range of these tyres, from the GravelKing Slicks to the SK Small Knobs (stop giggling at the back) and the Semi Slick in between.

They are all great tyres, but due to their lack of tread depth are kind of limited to dry conditions only. By contrast, the EXT+ has a tread around 2.5mm which can cope when the going is soft. A lot of by-ways and the like are a mixture of gravel and mud so can get slippery in the wet, and these have enough bite to still get traction in all but the sloppiest of conditions.

On the flat and the climbs they minimise wheelspin by shedding mud quickly, and the side knobs dig in on the corners giving plenty of confidence to let the bike go and have some fun.

I mainly used them on my favourite loop, which takes in gravel (obviously), grass, mud and clay, and there I found the EXTs very competent. Wet chalk was probably their toughest challenge and while they still slipped around a bit, they were better than a lot of gravel tyres. The quick tread clearance is the main factor.


At some point you'll probably find yourself riding on the road to string together your gravel sections, and these roll well enough. The middle tread zings along well on the hard surface and, while you lose some purchase in the bends compared to a standard slick, the ZSG (Zero Slip Grip) compound is soft enough you don't have to worry about them sliding out.

At 38mm they're wide enough not to sink in soft conditions, but I'd like to see some wider options: 38mm, 35mm and 33mm are the only choices. For my gravel routes I find 40mm about right, and 45mm even better, especially in the winter.

Puncture protection

For puncture protection these use AX, which Panaracer says is an extremely narrow cord woven at super-high densities into the casing, and improves resistance to cuts and abrasions. Also, there is ProTite Shield + Plus (yes really, they're obviously double-plus good), which is a reinforcing material wrapped around the whole tyre. That also protects the sidewalls as well as the main tread.

In practice I found these tyres very robust and durable. Various sections of my rides had seen hedge trimming activity, and I never had any issues with punctures or cuts.

> 29 of the best gravel bike tyres for 2021 — get the right go-anywhere rubber

The TLC part means they are tubeless compatible, and I found them simple to fit to a range of wheels using both hooked and hookless rims. The sidewalls wept a tiny bit of sealant after inflation, but taking them straight out for a ride saw them seal up quickly – after that I only had to top them up with air once a week.


At £54.99 these are within a fiver of the Maxxis Ravagers, which Jo described as 'sturdy rufty-tufty proper off-road gravel tyres.'

Schwalbe's G-One Ultrabite is cheaper at £43.99, but Jamie wasn't massively impressed, saying they are heavy (571g versus 474g for the Panaracers) and slow rolling.


While personally I'd like some wider options, I still really rate the EXT+ TLC gravel tyres for year round use in the UK.


Limited width options, but they work really well on wet, slippery gravel trails

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Make and model: Panaracer GravelKing EXT+ TLC folding tyre

Size tested: 700x38

Tell us what the product is for and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

Panaracer says, "The GravelKing EXT+ is built for the most extreme conditions you can throw at it, with the added puncture protection of our ProTite Shield + Plus technology. The tread design is tailored to work best in muddy and sloppy conditions, and the EXT+ will keep gripping through the absolute worst of it.

"The entire tyre is protected by our ProTite Shield + Plus technology, our most complete puncture protection, whilst the ZSG (Zero Slip Grip) compound offers low rolling resistance for an excellent ride and enhanced wear resistance. Part of our hugely popular GravelKing range, the GravelKing EXT+ TLC is the tyre designed specifically for the loosest gravel and mud you can find."

It is definitely one of the better gravel tyres out there for the British weather and trails.

Tell us some more about the technical aspects of the product?

Tubeless Compatible (up to 60psi)

ZSG Advanced Compound

ProTite Shield + Plus

Bead: Folding

Sizes: 700 x 33c / 700 x 35c / 700 x 38c

Weight: 370g / 420g / 460g

Colours: Black/Black, Black/Brown

Made in Japan

ZSG (Zero Slip Grip) Natural Compound

This compound has the same low rolling resistance as the Ultima compound. Its enhanced wear resistance makes it perfect for a long-lasting training tyre with an excellent ride.

AX-a Advanced Extra Alpha Cord

AX technology uses extremely narrow cord which is weaved at a super high density into the casing for lightness and flexibility. This increased density improves resistance to cuts and abrasions.

ProTite Shield + Plus

Ultra-strong reinforcing material is wrapped around the whole tyre, with nylon taffeta lining the treads to provide added protection against side cuts as well as punctures from dented rims or piercings.

Rate the product for quality of construction:
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Tell us how the product performed overall when used for its designed purpose

More capable in the UK's wet conditions than a lot of other gravel tyres on the market.

Tell us what you particularly liked about the product

Very easy to fit.

Tell us what you particularly disliked about the product

Nothing wider than 38mm.

How does the price compare to that of similar products in the market, including ones recently tested on

The price is reasonable against other chunky, value for money tyres like the Maxxis Ravager at £49.99 and the Schwalbe G-One Ultrabite at £43.99.

Did you enjoy using the product? Yes

Would you consider buying the product? Possibly, if they were wider

Would you recommend the product to a friend? Yes

Use this box to explain your overall score

These bring the ride quality of the other GravelKing tyres with the added bonus of more grip in the wet. Well priced, a decent weight and offering grip in all gravel conditions, these are very good – although widths are limited compared to some brands.

Overall rating: 8/10

About the tester

Age: 42  Height: 180cm  Weight: 76kg

I usually ride: This month's test bike  My best bike is: B'Twin Ultra CF draped in the latest bling test components

I've been riding for: Over 20 years  I ride: Every day  I would class myself as: Expert

I regularly do the following types of riding: time trialling, commuting, club rides, sportives, fixed/singlespeed,

As part of the tech team here at F-At Digital, senior product reviewer Stu spends the majority of his time writing in-depth reviews for, and ebiketips using the knowledge gained from testing over 1,500 pieces of kit (plus 100's of bikes) since starting out as a freelancer back in 2009. After first throwing his leg over a race bike back in 2000, Stu's ridden more than 170,000 miles on road, time-trial, track, and gravel bikes, and while he's put his racing days behind him, he still likes to smash the pedals rather than take things easy. With a background in design and engineering, he has an obsession with how things are developed and manufactured, has a borderline fetish for handbuilt metal frames and finds a rim braked road bike very aesthetically pleasing!

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