Continental Grand Prix 5000 S TR - Hooked Vs Hookless Rims

Published: 2022-05-06 by Jarno Bierman

Grand Prix 5000 S TR, Corsa Speed G+ 2.0, Pro One TT, Latex Inner Tube, and a Butyl Inner Tube

Hookless rims have popped up over the years as an alternative to the classic hooked rims that have been around for ages. Although we're not (yet) fans of hookless rims, it appears they're becoming more popular even though they come with some obvious drawbacks.


We see the main drawbacks are the requirement for hookless compatible tires and a maximum allowed inflation pressure of 73 psi - 5.0 bars. With the release of the Grand Prix 5000 S TR, which is now hookless compatible, the first point might now be a problem of the past as the Grand Prix 5000 S TR is probably one of the most popular and best performing tubeless tires out there.


The maximum allowed air pressure of 73 psi - 5.0 bars is also quickly becoming less of a problem as many road bike riders are moving to 28 or 30 mm tires and run them at lower air pressures for increased comfort, lower vibration losses, and better tubeless re-sealing.


We've tested the 28, 30, and 32 mm versions of the Grand Prix 5000 S TR with a classic hooked aluminium rim, a hooked carbon rim, and a hookless carbon rim (all close to 22 mm internal width). We left out the 25 mm version of the Grand Prix 5000 S TR as, although it's hookless compatible, we do not feel it's a good fit for hookless rims that are often much wider than standard, and the 73 psi - 5.0 bar maximum pressure in combination with a 25 mm tire will be too low for most riders.


We decided to also throw a hooked carbon rim into the mix so we can see if there's any difference between carbon and aluminium rims.


As usual, the averaged data of those tests will be available free for everyone. Pro Members can open the individual tire data and dig into the results further.


Test Set up and Conditions


When testing the same tires with different wheels, there will always be some differences as some wheels have more spokes or some hubs have more resistance. We always subtract the wheels' unloaded resistance when calculating the tires' final rolling resistance.


What this comes down to is that we're purely measuring the difference between the rims itself. There are still some small differences that we can't measure (bearing losses, spoke losses, rim losses) when the wheel is unloaded but the largest contributor will be taken out of the equation with the unloaded wheel measurement.


We used the following 3 wheels:


  • Shimano LX 670 hub + aluminium rim (hooked)
  • DT Swiss hub + carbon rim (hooked)
  • Zipp 303S carbon wheel (hookless)

The wheels all have different weights, and we added some extra weight to the machine to compensate for the differences.


Test Conditions


  • Speed of 29 km/h / 18 mph
  • Total wheel load of 42.5 kg / 94 lbs
  • Temperature between 21.5-22.5 °C / 71-72 °F
  • Diamond plate drum surface
  • 77 cm drum diameter

Test Results - Average Results of 28, 30, and 32 mm Grand Prix 5000 S TR


GP 5000 S TR Rolling Resistance 28, 30, 32 mm Average
Rim Hooked Aluminium Hooked Carbon Hookless Carbon
Rim Internal Width 22.0 mm 22.4 mm 22.7 mm
Average Tire Width
(73 psi - 5.0 bar)
31.17 mm 31.23 mm 31.23 mm
Rolling Resistance
73 psi / 5.0 bar
9.59 Watts 9.43 Watts 9.34 Watts
Rolling Resistance
65 psi / 4.5 bar
10.00 Watts 9.78 Watts 9.83 Watts
Rolling Resistance
58 psi / 4.0 bar
10.48 Watts 10.28 Watts 10.43 Watts
Rolling Resistance
51 psi / 3.5 bar
11.25 Watts 10.96 Watts 11.17 Watts

From the results above, it's quite obvious the rim type isn't going to make a huge difference. The differences between the 3 different rims all fall within the test's margin of error.


To make things even more inconclusive, a 0.1 watt measurement error of the wheels' unloaded "static" resistance can make a drastic change to the final results.


When not considering the margin of error of the tests, we see a trend where the aluminium rim performs just slightly worse (~ 0.2 watts), and the hookless rim drops off a bit sharper at the lower air pressures.


Test Results - Individual Tire Rolling Resistance Data (Pro Members)


The next section is only accessible by our highly valued Pro Members. This section includes all test data of the individual tires.


Conclusion


We conclude hookless rims do not perform measurably better or worse than hooked rims. In the averaged results, we see a maximum difference of 0.29 watts which can easily be the result of the margin of error of the tests.


When not considering the margin of error, we see a trend where the aluminium rim performs a bit worse, and the hookless rim drops off slightly more at lower air pressures. The individual test results confirm this trend.


This trend might then not result from the hooked or hookless system itself but in a difference in the shape of the rim itself or how tight the tire fits around the rim.


We also noticed the hookless Zipp 303 rims do not have much of a bead lock which might be more important than the whole hooked vs hookless debate.


Comments



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Excludes previous models/discontinued tires
Visit the road bike overview to view all
Brand Model Watts
VeloflexRecord TLR 256.3 W
VittoriaCorsa Speed G+ 2.0 (TLR) 257.0 W
ContinentalGrand Prix 5000 TT TR 287.1 W
ContinentalGrand Prix 5000 TT TR (TdF) 257.2 W
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ContinentalGrand Prix 5000 S TR 258.4 W
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VeloflexRecord (silica compound) 238.7 W
VittoriaCorsa Speed (tubular) 238.9 W
MichelinPower Cup TLR 258.9 W
ChallengeCriterium RS 259.4 W
ContinentalGrand Prix 5000 S TR (tanwall) 259.6 W
ZippTangente Speed Tubeless 259.6 W
SpecializedS-Works Turbo RapidAir 2Bliss Ready T2/T5 269.8 W
ContinentalGrand Prix TT 259.9 W
ContinentalGrand Prix 5000 2510.0 W
MichelinPower Road TLR 2510.1 W
SpecializedTurbo Cotton 2410.1 W
PirelliP Zero Velo TT 2310.2 W
ContinentalGrand Prix SuperSonic 2310.2 W
SchwalbePro One TLE Addix 2510.2 W
PirelliP Zero Velo Race TLR SL 2610.3 W
VeloflexCorsa Race TLR 2510.6 W
MichelinPower Cup 2510.6 W
ContinentalGrand Prix 5000 All Season TR 2510.9 W
PirelliP Zero Race TLR SpeedCore 2810.9 W
MichelinPower Competition 2510.9 W
ContinentalGrand Prix Force II 2411.0 W
PanaracerAgilest TLR 2811.3 W
ContinentalGrand Prix Attack II 2211.4 W
EnveSES Road Tire Tubeless 2511.4 W
BontragerR4 320 2511.5 W
PirelliP Zero Race 4S 2611.6 W
SpecializedS-Works Turbo 2Bliss Ready T2/T5 2811.6 W
ZippTangente Speed 2511.6 W
MavicYksion Pro UST Tubeless 2511.7 W
PirelliP Zero Velo Race TLR 2611.7 W
ChallengeStrada Pro HTLR 2511.8 W
VeloflexCorsa Evo TLR 2511.9 W
HutchinsonFusion 5 Galactik TLR 11Storm 2512.0 W
VittoriaCorsa N.EXT TLR 2812.1 W
WolfpackRoad Race 2612.1 W
VittoriaCorsa G+ 2.0 TLR 2512.2 W
VittoriaCorsa G+ (tubular) 2512.3 W
VeloflexCorsa Race (clincher) 2512.3 W
VittoriaCorsa N.EXT TLR 2612.3 W
MichelinPower Road 2512.4 W
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VittoriaCorsa Control G+ 2.0 TLR 2512.6 W
PirelliP Zero Race 2612.6 W
SchwalbePro One (tubetype) Addix 2512.8 W
VittoriaCorsa Elite (tubular) 2512.9 W
TufoComtura 4 TR 2812.9 W
CadexRace Tubeless 2513.0 W
VittoriaCorsa G+ 2.0 (open) 2513.0 W
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MaxxisHigh Road 2513.2 W
ChallengeStrada Pro 2513.4 W
SpecializedS-Works Turbo 2413.4 W
BontragerR3 Hard-Case Lite TLR 2513.6 W
PirelliP Zero Road 2613.7 W
SpecializedS-Works Turbo T2/T5 2613.8 W
PanaracerRace L Evo 3 2513.9 W
GoodyearEagle F1 Tubeless 2513.9 W
ContinentalGrand Prix 2514.0 W
VittoriaCorsa N.EXT 2614.0 W
ContinentalUltra Sport III 2514.1 W
VittoriaCorsa Control G+ 2.0 (open) 2514.1 W
ContinentalCompetition (tubular) 2514.2 W
MichelinPro 4 Endurance v2 2514.5 W
MichelinPower Endurance 2514.5 W
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SchwalbeOne TLE Performance Addix 2515.8 W
MichelinLithion 2 2515.9 W
PirelliCinturato Velo TLR 2616.0 W
SchwalbePro One HT (tubular) 2516.1 W
PanaracerRace A Evo 3 2516.4 W
SchwalbeDurano Plus Addix 2516.4 W
ClementStrada LGG 2516.9 W
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PanaracerRace D Evo 3 2517.4 W
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SchwalbeLugano II 2518.0 W
VredesteinFortezza Senso All Weather 2518.0 W
ContinentalGatorskin 2519.3 W
ContinentalGator Hardshell 2519.5 W
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ContinentalTerra Speed TR (tanwall) 4516.4 W
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Rene HerseSnoqualmie Pass TC 4417.4 W
TufoGravel Thundero 4017.4 W
TufoGravel Speedero 4017.5 W
ContinentalTerra Speed TR 4017.8 W
ContinentalTerra Hardpack TR 5018.6 W
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WTBRiddler TCS Light 3722.8 W
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Rene HerseSteilacoom TC 3823.1 W
PanaracerGravelKing Plus TLC 3523.1 W
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PirelliCinturato Gravel RC 4023.2 W
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SchwalbeG-One Allround Super Ground SpeedGrip 4026.0 W
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Excludes previous models/discontinued tires
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SchwalbeRacing Ralph LiteSkin Addix Speed20.5 W
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SchwalbeRacing Ray TLE Addix SpeedGrip23.8 W
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SchwalbeMarathon Supreme19.1 W
SchwalbeMarathon Almotion Addix19.4 W
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ContinentalContact II24.3 W
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SchwalbeMarathon E-Plus27.4 W
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45NRTHVan Helga43.5 W
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SurlyLarry 27 TPI45.5 W
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