The Veloflex Corsa is an open tubular style tire with a cotton casing and glued on tread just like the popular Vittoria Open Corsa. This is a review of the 25 mm version of the Corsa, a 23 mm version is available as well. The Veloflex Corsa comes with a black casing which is a bit different from most other cotton tires. If you prefer skin colored sidewalls, the Veloflex Master is available as well which is essentially the same tire except for the color of the casing.
Veloflex is a small manufacturer from Italy that is specialized in hand made, high-end road bike tires. They are mostly known for their tubular tires but make some clinchers as well. The Veloflex Corsa/Master tires are most comparable to the Vittoria Open Corsa (read review) or Grand Prix 4000S II (read review) kind of tires as these come with an anti-puncture belt and can be seen as all-round tires.
The other clincher tire from Veloflex is the Record. The Record has an even lighter casing, thinner tread, and doesn't come with an anti-puncture belt. For everyone that is looking for data on the Veloflex Record 22-622 clincher tire: I've tested it (only RR, no puncture) and it comes in at 9.9 watts @ 120 psi / 8.3 bars and 10.6 watts at 100 psi / 6.9 bars.
|Tire Type||Tubetype (clincher)|
|Supplied By||Bought in store|
|New or Used||New|
|Specified Weight||205 grams|
Size and Weight Measurements
|Size and Weight Measurements (Bike Wheel: 622x17C, Pressure: 100 psi / 6.9 bar)|
|Specified Weight||205 grams|
|Measured Weight||200 grams|
|Measured Width||25 mm|
|Measured Height||22 mm|
|Total Tire Thickness Center||2.1 mm|
|Total Tire Thickness Sidewall||0.75 mm|
Specified weight of the 25-622 Corsa is 205 grams, my sample came in at 200 grams which is a really nice weight. The measured width at an air pressure of 100 psi / 6.9 bars, on a 17C rim is 25 mm. Total height is 22 mm. Compared to most other 25-622 road bike tires, the Corsa is quite a small tire. Most 23-622 rated tires are just as big as the Corsa 25.
The total thickness of the tire at the center of the tread comes in at 2.1 mm. 2.1 mm is quite thin as the Vittoria Open Corsa G+ comes in at 2.4 mm and other comparable tires like the Conti GP4000SII (read review) , Schwalbe One (read review), and Michelin Power Competition (read review) come in closer to 3 mm. I'm pretty sure this tire won't last as long as those tires. The average thickness of the sidewall is 0.75 mm. It must be added that the thickness of the sidewall is 1 mm near the bottom of the sidewall and 0.5 mm near the top.
Rolling Resistance Test Results
|Rolling Resistance Test Results (Speed: 29 kmh / 18 mph / 8 m/s, Load: 42.5 kg / 417 N)|
|Inner Tube||Conti Race28 (100gr butyl)|
|Rolling Resistance 140 psi / 9.7 Bar||
CRR: Not Tested
|Rolling Resistance 120 psi / 8.3 Bar||
|Rolling Resistance 100 PSI / 6.9 Bar||
|Rolling Resistance 80 PSI / 5.5 Bar||
|Rolling Resistance 60 PSI / 4.1 Bar||
|Use the formula: RR (watts) = CRR * speed (m/s) * load (N) to calculate rolling resistance at a given speed and load|
Rolling resistance of the Veloflex Corsa isn't spectacularly low for a high-end tire, but definitely not bad either. With a rolling resistance of 13.4 watts at an air pressure of 120 psi / 8.3 bars, the Corsa does get outperformed by most high-end all-round tires from other manufacturers by 1 to 2.5 watts per tire. If you're looking at cotton tires only, the Vittoria Corsa G+ (read review) and Specialized Turbo Cotton (read review) seem to be the better performing tires.
Although the Corsa is a bit smaller than most other 25 mm road bike tires I've tested (which results in a small disadvantage in the rolling resistance test of ~0.3 watts at 120 psi / 8.3 bars), I must say I expected a bit more from such a light and thin tire from Veloflex. I know the Record is much faster at 9.9 watts @ 120 psi / 8.3 bars, but that tire has even less tread thickness at 1.5 mm max total tire thickness.
Puncture Resistance Test Results
|Puncture Resistance Test Results (higher is better)|
|Puncture Resistance Tread||12|
|Puncture Resistance Sidewall||4|
In the tread puncture resistance test, the Veloflex Corsa performs surprisingly well for such a thin tire. With a score of 12 points, it outperforms the Vittoria Corsa G+ and GP4000S II by 1 point. It looks like the Veloflex anti-puncture belt works well to stop a 1 mm steel needle from penetrating the tire.
When puncturing the sidewall, the Veloflex performs average. Most other high TPI, high-end tires seem to come in at 4 to 5 points in this test.
Rolling resistance of the Veloflex Corsa is a bit on the high side for an expensive hand made tire. Another disadvantage is the low tire thickness of just 2.1 mm which indicates there isn't all that much rubber to wear down. The pros are these tires come with a cotton casing, have a low weight, and still perform quite strong in the puncture resistance tests. If these tires fit your needs, I don't see a reason to avoid them.
I do feel the Vittoria Corsa G+ (read review) tires are the better tires if you're looking for some cotton tires. Unfortunately, I can't comment on grip or wear between these tires as that could make a big difference as well. Please leave a comment and let me know if you like the Veloflex tires as I'm really curious about your opinion.
TEST VERDICT: Recommended
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