MTB Tire Comparison:
Continental Speed King II RaceSport 2015 vs
Continental X-King RaceSport 2015

Contents and Test Summary

  1. Manufacturer Specifications
  2. Size and Weight Measurements
  3. Rolling Resistance Test Results
  4. Puncture Resistance Test Results
  5. Static Grip Test Results
  6. Conclusion
  • Continental Speed King II RaceSport *
  • Continental X-King RaceSport *
* Grip test data not available
Performance compared to all other MTB tires
(100% is best)
Pro Members get 11-point radar charts



Manufacturer Specifications


Manufacturer Specifications
Brand ContinentalContinental
Model Speed King II RaceSportX-King RaceSport
Year 20152015
Supplied By Bought in storeBought in store
Full Review Full ReviewFull Review
New or Used NewNew
Mileage 0 km0 km
Price Range HighHigh
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Manufacturer Part Number 01009330100531
EAN
TPI 3/1803/180
Compound Black ChiliBlack Chili
Bead FoldingFolding
ETRTO 55-62255-622
Size Inch 29"29"
Width Inch 2.202.20
Specified Weight 465 grams555 grams
Min Air Pressure psi psi
Max Air Pressure 65 psi65 psi
Made In Members OnlyMembers Only
Available Sizes 29x2.20
27.5x2.20
26x2.20
29x2.40
29x2.20
29x2.00
27.5x2.20
27.5x2.00
26x2.40
26x2.20
26x2.00
Image 1
Continental Speed King II RaceSport 2015
Continental X-King RaceSport 2015
Image 2
Continental Speed King II RaceSport 2015
Continental X-King RaceSport 2015
Image 3
Continental Speed King II RaceSport 2015
Continental X-King RaceSport 2015
Image 4 Not AvailableNot Available

Size and Weight Measurements


Size and Weight Measurements
Model Speed King II RaceSportX-King RaceSport
Specified Weight 465 grams555 grams
Measured Weight 467 grams564 grams
Measured Width Carcass 54 mm (un-round)53 mm (un-round)
Measured Width Tread 49 mm52 mm
Measured Height 53 mm (un-round)51 mm (un-round)
Measured Knob Height Center 0.5 mm2.5 mm
Measured Knob Height Edge 1.5 mm4.0 mm
Measured Casing Thickness Center 1.70 mm1.80 mm
Measured Total Thickness Sidewall Members OnlyMembers Only
All size measurements are taken at an air pressure of 35 psi / 2.4 bars on a 17.8 mm inner width rim.

Rolling Resistance Test Results


Rolling Resistance Test Results
Model Speed King II RaceSportX-King RaceSport
Spin Up Video No VideoNo Video
Inner Tube Conti MTB 29 (225 gr butyl)Conti MTB 29 (225 gr butyl)
Rolling Resistance
55 PSI / 3.8 Bar
Members OnlyMembers Only
Rolling Resistance
45 PSI / 3.1 Bar
Members OnlyMembers Only
Rolling Resistance
35 PSI / 2.4 Bar
16.6 Watts
CRR: 0.00498
22.8 Watts
CRR: 0.00683
Rolling Resistance
25 PSI / 1.7 Bar
19.1 Watts
CRR: 0.00573
25.9 Watts
CRR: 0.00776
All numbers are for a single tire at a speed of 29 km/h / 18 mph and a load of 42.5 kg / 94 lbs.

Use the formula: RR (Watts) = CRR * speed (m/s) * load (N) to calculate rolling resistance at a given speed and load.

Puncture Resistance Test Results


Puncture Resistance Test Results (higher is better)
Model Speed King II RaceSportX-King RaceSport
Total Puncture Score Tread 29 Points40 Points
Total Puncture Score Sidewall Members OnlyMembers Only
Tread Puncture Force Sharp Needle Members OnlyMembers Only
Tread Puncture Force Blunt Needle Members OnlyMembers Only
Tread Total Tire Thickness 1.7 mm1.8 mm
Sidewall Puncture Force Sharp Needle Members OnlyMembers Only
Sidewall Puncture Force Blunt Needle Members OnlyMembers Only
Sidewall Total Tire Thickness Members OnlyMembers Only

Static Grip Test Results


Static Grip Test Results (higher is better)
Model Speed King II RaceSportX-King RaceSport
Wet Grip Average No DataNo Data
Wet Grip Center Members OnlyMembers Only
Wet Grip Edge Members OnlyMembers Only
Measured Knob Height Center 0.5 mm2.5 mm
Measured Knob Height Edge 1.5 mm4.0 mm
Grip in points = coefficient of friction * 100
MTB grip test rim width = 30.0 mm
Wet Grip Test and Off-Road Tires (info)

Conclusion


Conclusion
Model Speed King II RaceSportX-King RaceSport
Full Review Full ReviewFull Review
Verdict Highly RecommendedRecommended
Rating 5.0 / 54.0 / 5
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  • Continental Speed King II RaceSport *
  • Continental X-King RaceSport *
* Grip test data not available
Performance compared to all other MTB tires
(100% is fastest - lightest - highest - strongest)

Pro Members get 11-point radar charts