The Vredestein Fortezza Senso All Weather is the top of the line all-round road bike tire from Vredestein. This tire uses all of the high-tech stuff you expect from a top of the line tire: 120 TPI carcass, TriComp compound, and excellent protection. Although this is the high-end tire from Vredestein, pricing is a little lower when compared to Conti's or Schwalbe's. This tire was donated by Dutch webshop Mantel.com. Thanks, Mantel!
When looking at the specifications of the Fortezza Senso All Weather, it seems to be very comparable to the Conti GP4000S and Schwalbe One. specified weight is 225 grams for the 25 mm version of this tire. Add-in the 120 TPI carcass and TriComp compound and pretty much everyone will be convinced rolling resistance should be comparable to top of the line road bike tires from other manufacturers.
Surprisingly, the performance of the Fortezza Senso in the rolling resistance test is awful. This tire has the highest rolling resistance of all road bike tires I had the chance to test up to know. Mantel sent me 2 tires, I tested both and both were equally bad. I retested a Schwalbe One and Conti GP4000S II to verify the Fortezza Senso results, these tires had the same low rolling resistance they always have. Read on for the full results.
|Model||Fortezza Senso All Weather|
|Tire Type||Tubetype (clincher)|
|Supplied By||Bought in store|
|New or Used||New|
|Specified Weight||240 grams|
Size and Weight Measurements
|Size and Weight Measurements (Bike Wheel: 622x17C, Pressure: 100 psi / 6.9 bar)|
|Specified Weight||240 grams|
|Measured Weight||234 grams|
|Measured Width||26 mm|
|Measured Height||24 mm|
|Total Tire Thickness Center||3.2 mm|
|Total Tire Thickness Sidewall||0.55 mm|
The pair of Fortezza Senso All Weather 25 mm I received, had a weight of 234 and 235 grams. Vredestein claims a weight of 240 grams, tires that are lighter than specced are great! The maximum air pressure of the Fortezza Senso All Weather, as indicated on the sidewall, is 130 psi.
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|
The rolling resistance test: This is where it all goes wrong. At 120 psi, the Fortezza Senso already has a much higher rolling resistance (18 watts) than a GP4000S II at 60 psi (15.5 watts). It even has a much higher rolling resistance than a very cheap Vittoria Zaffiro at the same air pressure. Fortunately, rolling resistance doesn't explode when dropping air pressure. Still, rolling resistance is the highest of all road bike tires I've tested to date.
Puncture Resistance Test Results
|Puncture Resistance Test Results (higher is better)|
|Puncture Resistance Tread||13|
|Puncture Resistance Sidewall||4|
A road bike tire with such a high rolling resistance should at least have a very high puncture resistance? Puncture resistance is good with a score of 13, which is a little higher than the GP4000S (11) or Schwalbe One (12). Still, there are other tires with comparable or higher puncture resistance, but much lower rolling resistance. Please look at all data and make your own verdict.
I had high hopes of the Vredestein Fortezza Senso All Weather testing close to the other top tires or maybe even surpassing them. Unfortunately, it seems rolling resistance is way too high to consider using this tire. At 100 psi and a speed of 29 km/h, rolling resistance for a pair of tires is 14 watts higher when compared with the Continental Grand Prix 4000S II or Schwalbe One. In my opinion, that's way too much.
At a lower price point than a Fortezza Senso, you will be able to buy a Vittoria Rubino Pro or Conti Grand Prix, which both have much lower rolling resistance. For slightly more money, true low rolling resistance tires like the Conti GP4000S II or Schwalbe One can be had.
TEST VERDICT: Not Recommended