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Challenge Grifo Open 33 Tyre

From £39.20 £23.20 discount
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  • Free tracked delivery
  • Trustpilot review 9.3 out of 42.921 reviews

Pros & Cons

  • Great tyre for mixed surfaces, offering excellent grip on both forest floors and sand.
  • The tan sidewalls make these tyres look a lot like tubes.
  • The white tyres can really make your bike stand out from the crowd.
Read more on what our customers have to say about this product


Brand Challenge
Wheel size 28 inch
Valve Length40 mm
Type of tyreFoldable tyre
Tyre width33 mm / 1.30 inch
All specifications


The Challenge Grifo is a handmade Italian cyclocross folding tyre of professional quality. In combination with a latex inner tube this tyre approximates the quality of a tube, but with the comfort of a clincher!

The feel, flexibility and stability of this tyre feel extremely good. It is the perfect training tyre, which feels just as at home at competitions.

Frequently bought together

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32 reviews
Wheel size 28 inch 28 inch 28 inch 28 inch
Valve Length 40 mm
Valve Presta
Type of tyre Foldable tyre Tubeless Ready / Foldable tyre Foldable tyre Foldable tyre
Material Rubber
Tyre width 33 mm / 1.30 inch 35 mm / 1.35 inch / 40 mm / 1.50 inch 33 mm / 1.30 inch 33 mm / 1.30 inch
From £39.20 £39.20 £40.90 £42.60
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Customer photos


8.6 / 10 Average from 115 reviews | Write a review
8.6 / 10

115 reviews


  • Look good (2)
  • Great grip (2)
  • Fast rolling (2)
  • ride quality (1)


  • fitting (1)
  • Will not stay on Stans Alpha rim (1)
  • Not "officially" tubeless (1)
  • Hard to get on first time (1)

Most recent reviews

8 / 10

STEPHEN, 13 February 2019

great cx tyres close to a tubular

Hi quality tyre , very flexible ideal for cyclocross or gravel trails Patience is require to fit these tyres due to the construction design but when fitted give a compliant ride ,recommend latex tubes with this product


  • ride quality


  • fitting

8 / 10

Stuart, 22 September 2018

Great all round grip

This tyre is almost perfect for multi surface cyclo cross racing. Good in most conditions and most surfaces bar deep mud. My only gripe, and why I can't give 10/10 is the fact it will not stay on my Stans Alpha rims due to the year drop shaped bead! Fine on every other rim I have tried but the slightest pressure from a dropped curb, cycle cross hurdle or flying remount pops it straight off the rim. My Scwalbe 1 tyres and Clement pdx don't have this issue.


  • Great grip
  • Multi conditions
  • Multi weather
  • Supple


  • Will not stay on Stans Alpha rim
  • Not "officially" tubeless

10 / 10

Robert, 18 September 2018

Great choice of tyre for autumn Cx

I tend to really research the hell out of every product I buy. I went through all sorts of forums, took advice and it always pointed to these tyres. Yes they are a few quid more than your next best tyre but to get what you pay for. Silky ride and great grip. I used them with latex tubes and can not fault the ride. Mantel best the opposition by about £5 per tyre. Well packaged and well received. I’ll be getting some Limus’ for the really muddy stuff in November.


  • Silky feel
  • Fast roling
  • Light
  • Look great


  • Hard to get on first time

10 / 10

Craig, 10 September 2018

The best tyre for most conditions

The Challenge Grifo open tubular is my choice of tyre for all occasions until the real thick mud arrives and can be run at low pressure when fitted with the challenge latex cx tubes with less chance of pinch punctures they also look cool on the bike


  • Grip
  • Lookrun at low pressure


  • Can be hard to fit
  • Have to be clean straight away to keep side walls

10 / 10

Karl, 22 October 2017

Amazing tyre with great feel and feedback. Performs better than expected in heavy mud.

Use with latex inner tubes for the best clincher setup ever.


  • Quality race tyre
  • Good feel
  • Quick


  • Not found one yet.

All specifications

Additional information

• Superfine woven: 300 TPI (threads per inch)
• PPS: Puncture Protection Strip
• Weight: 350 gram