The Pro 4 Service Course 700 x 25C is the all-round tire of the Pro 4 road bike line from Michelin, which is the successor of the Pro 3 line. The Pro part means you will get the best tires Michelin is able to build. The Pro 4 line consists of 5 tires which all excel in their own discipline as grip, puncture resistance, rolling resistance, and durability. The Pro 4 Service Course tries to combine the best of these disciplines in one road bike tire.
Because Michelin is one of the most popular manufacturers of road bike tires, I had to include at least a single Michelin road bike tire. The Service Course might be a bit too tough for a test focused on rolling resistance. The Comp Service Course might have been a better fit. According to Michelin, the Comp has a 7% lower rolling resistance at the cost of some puncture resistance, I might test this tire in the future.
As always, I'm testing the 25C version of this tire. After mounting the tire on a 17C rim, I was surprised by the size of this tire. This is a very wide tire with a lot of air volume, real measured width is 28 mm and height is 26 mm, which makes this tire close to a 28C tire in reality. Make sure it will fit your frame when buying this tire.
|Model||Pro 4 Service Course|
|Tire Type||Tubetype (clincher)|
|Supplied By||Bought in store|
|New or Used||New|
|Specified Weight||215 grams|
Size and Weight Measurements
|Size and Weight Measurements (Bike Wheel: 622x17C, Pressure: 100 psi / 6.9 bar)|
|Specified Weight||215 grams|
|Measured Weight||222 grams|
|Measured Width||28 mm|
|Measured Height||26 mm|
|Total Tire Thickness Center||2.9 mm|
|Total Tire Thickness Sidewall||0.55 mm|
With a measured weight of 222 grams, this is quite a light tire, but still a bit heavier than the 215 grams specified by Michelin. It's interesting to note that weight doesn't directly relate to rolling resistance or puncture resistance (as seen below). The type of materials used definitely makes a bigger difference than the amount of materials used.
As previously noted, the 25C Pro 4 Service course measures 28 mm wide on a 17C rim at 100 psi. Height is 26 mm.
Rolling Resistance Test Results
|Rolling Resistance Test Results (Speed: 29 kmh / 18 mph, Load: 42.5 kg)|
|Inner Tube||Conti Race28 (100gr butyl)|
|Rolling Resistance 140 psi / 9.7 Bar||Not Tested|
|Rolling Resistance 120 psi / 8.3 Bar||14.9 Watts|
|Rolling Resistance 100 PSI / 6.9 Bar||16.0 Watts|
|Rolling Resistance 80 PSI / 5.5 Bar||17.6 Watts|
|Rolling Resistance 60 PSI / 4.1 Bar||20.1 Watts|
|Rolling Resistance Coefficient (Crr) 140 psi / 9.7 Bar||Not Tested|
|Rolling Resistance Coefficient (Crr) 120 psi / 8.3 Bar||0.00447|
|Rolling Resistance Coefficient (Crr) 100 psi / 6.9 Bar||0.00480|
|Rolling Resistance Coefficient (Crr) 80 psi / 5.5 Bar||0.00528|
|Rolling Resistance Coefficient (Crr) 60 psi / 4.1 Bar||0.00603|
Rolling resistance is not as low as other high-end tires like the Continental GP4000S II or Schwalbe One. At an air pressure of 120 psi, rolling resistance is 14.9 watts. Dropping air pressure to 100 psi results in a rolling resistance of 16 watts. At an even lower air pressure of 80 psi, rolling resistance increases to 17.6 watts. This means that, depending on air pressure, rolling resistance is 2.7 to 4.6 watts higher when compared to the Continental Grand Prix 4000S II.
The Michelin Pro 4 Comp should perform a bit better in the rolling resistance test when compared to the Service Course. It should also be more comparable to tires like the GP4000S and Schwalbe One. Unfortunately, it's not available in a 25 mm version. Let's hope the future Pro 5 series will include a 25 mm Comp version.
Puncture Resistance Test Results
|Puncture Resistance Test Results (higher is better)|
|Puncture Resistance Tread||15|
|Puncture Resistance Sidewall||6|
While performance isn't that good in the rolling resistance test, it excels in the puncture resistance test, with a score of 15, it's a step up on the puncture resistance scale when compared to the Grand Prix 4000S II(11) and Schwalbe One (12). Combined with the low weight, this makes the Pro 4 Service Course an excellent all-round tire.
With a real measured width of 28 mm, this should be a 28C tire. If you're coming from 20/23 mm tires and want something with more volume, this is a very big step up. Puncture resistance is very good and it rolls quite well. If you want a little faster rolling road bike tire from Michelin and don't mind a bit less puncture resistance, take a look at the Pro 4 Comp.
If you get a lot of flats, you should consider the Michelin Pro 4 Service Course as it's the most puncture resistant tire that still has a relatively low rolling resistance. With road bike tires, you'll always run into the rolling resistance/puncture resistance trade-off, there's nothing you can do about it. I recommend this tire on its puncture resistance Vs rolling resistance qualities.
TEST VERDICT: Recommended
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