Challenge Grifo Pro Open 33 Tires
5/ 5
Hubert 21 November, 2023

Voltreffer

Super tyre and much cheaper than the new dugast tyres

Pros
  • Excellent for grip in grass and lightly sprinkled onde
  • It looks nice because of the brown sidewall.
  • Smooth with latex straps.
Cons
  • Have good strength to get it on the rim
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Challenge Grifo Pro Open 33 Tires
5/ 5
Guido 6 November, 2020

It makes it easier for me to get to places I have never been before.

Purchased these tyres for on my Canyon Endurace AL 7.0 so that I can ride with more grip on the bike path in autumn and winter, but also ride some gravel. This goes extremely well. The tyres mount fine on my DT Swiss wheels. Ride very pleasant, too.

Pros
  • Grip
  • Rolling resistance
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Challenge Grifo Pro Open 33 Tires
4/ 5
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.

Pros
  • Great grip
  • Multi conditions
  • Multi weather
  • Supple
Cons
  • Not "officially" tubeless
  • Will not stay on Stans Alpha rim
Challenge Grifo Pro Open 33 Tires
5/ 5
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.

Pros
  • Fast roling
  • Light
  • Look great
  • Silky feel
Cons
  • Hard to get on first time
Challenge Grifo Pro Open 33 Tires
5/ 5
Alex 14 September, 2017

Perfect tyres for cyclocross

Fantastic tyres! Awesome grip in wet-ish mud and roll really fast on tarmac. These tyres are perftect for cyclocross. I only gave these tyres a 9 As they were very difficult to install.

Pros
  • Fast rolling
  • Great grip
  • Look good
Cons
  • Hard to install