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Challenge Grifo Tubular Tire for Cyclocross

2012-01-07 • SEND FEEDBACK
Related: Cyclocross, gear, tubular
@AMAZON
Challenge Grifo 32 tubular cyclocross tire

The Challenge Grifo tubular tire is a premium hand-made tubular cyclocross racing tire. I tested both the 34C and 32C versions.

I had three immediate tire semi-failures on the front wheel (defective or badly made tires).

Yet a 700 X 32C size worked great (no bulge problems after ~300 miles) and I have gotten a lot of miles on it. Grip with the 32C version is excellent.

See Challenge Grifo 32 tubular tire @AMAZON pricing at Amazon.

Technical features

Oddly, the picture on the Challenge site shows 300 TPI, but the tires I bought are actually 260 TPI, which is also what the specifications say.

Use:	    Cyclocross
Size:	    28"
Width:	    32mm
Weight:	    415 gr (nominal)
TPI:	    260
BAR:	    2-6
PSI:	    28-87
Bead Casing:	Super Poly
Color:          Black-Brown

Weight

The bike industry cheats on weight. Challenge is no exception, but the weights are quite close, far better than the 10% or more one might find with Veloflex.

I weighed two tires as follows:

423g = +1.9%
427g = +2.8%

Ride quality

Excellent on the Moots Psychlo X RSL.

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