This Vredestein Fortezza Pro TriComp Tubular Tyre is no longer available although you may find similar or newer versions below:
|Anthracite / Red||700 x 21c|
|Anthracite / Red||700 x 23c|
|Black / Black||700 x 21c|
|Black / Black||700 x 23c|
Competition tubular for all weather conditions providing very low rolling resistance and giving maximum grip in corners.
|Wheel Size:||700c (622)|
TriComp Technology: The specific tread and side wall compound guarantee the best grip and lowest rolling resistance in all weather conditions. The tread compound is highly wear-resistant and smooth running, while the softer compound across the tyre shoulder ensures optimal grip in dry conditions.
Curve Control System: The curvature of a tyre determines its steering behaviour, which is particularly important in corners. The Curve Control System ensures that the tyre keeps its curved shape longer. Combined with the unique characteristics of the TriComp technology, this allows corners to be taken at higher speed, even in wet weather.
TPI Explained: The casing of a tyre is constructed from a bead of steel wire or armid threads and a fabric with rubber on both sides. The thread density of the fabric determines the quality of the tyre. This density is expressed in TPI )Threads Per Inch). A higher TPI means lower weight, greater comfort and flexibility, and lower rolling resistance. Vredestein has tyres available with a TPI between 24 and 290.
These tubular tyres are designed for tubular rims, these are glued on using tubular cement or tubular tape. They are the preferred choice for serious riders and professionals when all that matters is performance. A tubular is a sealed unit with an inner tube sewn into the tyres casing, this means the tubular is perfectly round in profile and offers a better feel when cornering. Vittoria have introduced open tubulars which are the same design as their tubular tyres but with a bead for use on a clincher rim, these will offer the closest feel of a tubular but the ease of repair associated with a clincher. Sizing is subtly different to clincher wheels and can be a bit confusing as most manufacturers still quote the old imperial sizes. However there are only 2 real sizes: 26" is the same as 650c, then 27", 28" and 700c are all the same size. We spotted this useful article on Bike Radar which explains briefly the benefits and how to fit tubular tyres.
Vredestein founded in Holland in 1908 and a company that has always focused on rubber products. In the early 1970s Vredestein began to concentrate only on tyres. This European company focusses on innovation and technology. This makes Vredestein tyres among the best available at any price.
|700 x 18C||18-622|
|700 x 23C||23-622|
|700 x 25C||25-622|
|700 x 28C||28-622||28 x 1 5/8 x 1 1/8|
|700 x 32C||32-622||28 x 1 5/8 x 1 1/4|
|700 x 35C||37-622||28 x 1 5/8 x 1 3/8|
|700 x 47C||47-622|
|This is a generic size guide not all tyres will come in the sizes shown.|
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It's immediately noticeable how supple Vredestein's pro-level tubular is, thanks to a high quality combination of 290tpi carcass and latex inner tube. This seemed, in part, to help fitting — much less of an 'iron thumb' was required — plus once inflated it ran very true. On the road the Pro Tri Comp rolls well, upholding Vredestein's claim of extremely low rolling resistance, even before I'd realised the recommended minimum pressure of 8.0 bar, just shy of 120psi in English money, and I'd been happily running 110psi.
An extra 10psi didn't noticeably improve rolling speed, but it prevents the tub squirming over on tight turns; an effect caused by its suppleness.
There's ample grip from the softer rubber compound over the shoulders for confident cornering, rain or shine, but as is so often the case with grippy rubber, it's at the cost of durability. I've regularly dug out debris that's left the tread heavily cut, but I still haven't flatted so that's a big plus for the polyamide anti puncture layer, but as ever for top end kit they don't come cheap.
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