[longo]

und auf jeden Fall immer schön die black version nehmen, nicht die transparent/tanwall version:
https://www.bicyclerollingresistance...transparent-28

"We see the same thing as with the 25mm versions: the 28mm transparent version of the Grand Prix 5000 S TR rolls significantly slower than the version with black sidewalls. Our 28mm transparent sample is also considerably heavier than our 28mm black sidewall sample, resulting in a rolling resistance that increases by more than 20% at the lowest tire pressures.


We can now conclude that the transparent sidewalls cause this poorer result. We think there is more loss in the casing wires of the transparent version because they are less fixated and can rub against each other, resulting in a loss of efficiency.


In all our other tests, we do not see any differences, and the 28mm transparent version performs in line with all the other versions of the Grand Prix 5000 S TR we have tested.


We seem to have forgotten why tire manufacturers started making tire sidewalls black. If you want the best version of the Grand Prix 5000, go for the black sidewalls."