I carried out a new tire test this morning. I won’t
hide from you that at the moment! rolling resistance is my hobby!
By cross-referencing what is available in field and lab/roller studies ! I
identified a new challenger in light tires with a very Continental GP Supersonic low Crr (
rolling coefficient).
The latest Continental Supersonic (160g)
I already had it but it was 5 years old (although very good in my tests)
and not equipped with the latest version of the industry email list miraculous Black Chili rubber. So
it was opposed to my current best tires! the GP4000s (188g) Continental GP Supersonic and the Conti TT Ltd (176g). No more tubulars!
my latest information from Michelin and the Wheel Energy Lab
confirms the superior performance of the latest tires. The inertial gain that
carbon tubular wheels could represent in bumps is no longer sufficient compared to the performance
of a tire associated with a latex inner tube
!
I took advantage of the cool morning air to have
Optimal conditions:
20 degrees! not a breath of air! bright sunshine. As
always! I weigh the entire assembly and fill the bottle to climb
with the same weight. Today 69.2 kg all john cadacio included! 7 bars of pressure!
latex rear chamber and butyl on the front (let’s avoid the risk of explosion
when braking downhill!). Salbert: 3!750 km @5.7%.
I start with my GP4000s standard tires then I put on the already
tested Continental TT. I go a little harder than usual with this time
315w avg. This session will serve as a last intensive reminder before the time trial of the Ballon on Sunday. In this match the TT Ltd takes the advantage with 2.3 watts saved
on the gp4000s. the results clean email found during the
previous test and completely consistent with the German lab of the TOUR mag. Once
again I remain amazed by the repeatability and precision of the test and the SRM.