Vredestein Ultrac Sessanta
Thu, 04/23/2009 - 01:43 — admin
This tyre is designed by Giugiaro. It is a pretty unusual tie-up but it has been found that buyers are influenced by the styling of the tread pattern and sidewall.The Vredestein Ultrac Sessanta is from the Netherlands and while widely known in Europe, is largely unknown here. The tread pattern is radical to say the least being basically of two tread blocks a small inner one and a large outer one separated by just a single continuous drainage groove. The large block if you examine it carefully is actually a continuously connected tread but heavily grooved in a diagonal pattern. The outermost part of the tread is less grooved so as to support heavier loads during cornering. The sidewalls are very stiff as is the tread belting.
Scrub-in period: After about 200 km of scrubbing-in, the tyres took on a very sharp and meaty feel at the steering.
Steering: The tread compound also manages to cling on well to wet tarmac and the steering still feels well connected to the road not feeling greasy at all. This inspires confidence as does the absence of any breakaway characteristic during hard cornering,[8/10]
COMFORT & NOISE:
Comfort: While the recommended tyre pressure at 41 psi does it no favours in the comfort department the odd thing is dropping from 41 psi to 32 psi the ride comfort did not improve that much. Which is to say there is no advantage to lower tyre pressures to gain some comfort. In fact performance and rolling resistance are penalized significantly by lowering tyre pressures. At 41psi the tyres felt as sharp and as unyielding as the OEM RE070s the test car came with.
Dry Cornering: 0.98g
Dry Braking 80-20 km/h: 1.77 sec in 25m
Average g: 0.96g
Peak g: 1.02
Wet Cornering: 0.83g
Wet Braking 80-20 km/h: 2.20 sec 30 m
Average g: 0.77g
Peak g: 0.83g
Rolling Resistance: 0.0248g @ 41 psi (0.0255g @ 32 psi) average
Weight: 11.0 kg
This relatively unknown tyre from Netherlands has put on a mighty impressive showing. Its biggest draw is its confidence inspiring steering feel, offering a solid connection from the steering to the road. Its slightly understeering handling suits open winding roads far better than the track. Over meandering roads it is clear in its behaviour and intentions holding no surprise for the driver making it a favourite for fast road use. This is also carried over to wet conditions with the same confident delivery. Its dry and wet performance help mitigate the firm ride and since does not become more comfortable with lower pressures the Ultrac Sessanta should be used between 35 to 40 psi to deliver max performance and to keep rolling resistance at bay. Its behaviour is so benign that it can be safely recommended to novices as well. Highly Recommended. Level A+
Test Tyres courtesy of Stage4 Motion Pte Ltd