100 miles later... IRC Formula Pro Tubeless Light
IRC Formula Pro Tubeless light
From the first ride, the low weight (240gram) is readily apparent as they spin up very well with the reduced inertia.
Thankfully, this isn't their only - or even best asset. The rubber compound is very, very good. After a couple of hundred miles, there isn't a nick (given Kent and Surrey's roads, that's impressive) and the traction is as good - perhaps even a little more confidence inspiring - than the superb Hutchinson Fusions.
Excess moulding rubber has worn quickly on the rear, so we'll keep an eye on wear rates. Ride quality is also up there: the carcass is supple and we've had no air seepage issues. To say we're impressed so far is a mild understatement.
Worth the wait?
With the leaves starting to turn and a certain chill in the air of a morning the cyclist's mind turns towards cyclocross, Castelli is one step ahead as they've released details of a thermo version of the SanRemo Speedsuit.
This article was first published in the October 4 issue of Cycling Weekly. You can also read our magazines on Zinio and download from the Apple store.