Just to update this thread:
So I have had the GoodYear EfficientGrips for about a month now.
They seem smooth, and are nice and quiet. But one thing I am disappointed with is the wet performance - even when the road is slightly damp, wheelspin occurs far too easily. Wheelspin was very rare with my old Michelin's, but on these, even the slightest dab of the throttle causes wheelspin (eg taking off at roundabouts), which is very annoying. Doesn't give much confidence.
Anyone else experienced frequent wheelspin?
Summer tyres are not designed to work at under 7 degrees centigrade -
At higher tempratures the Goodyears may work a lot better in the wet, pressures are important too, and getting some heat into the tyres (eg higher pressures / driving harder/ warming the tyres up)
The Goodyears have a high silica content that increases efficiency/ MPG/ longevity and reduces noise but is not as grippy at low temps - unfortunately every tyre is a compromise
A couple of extra psi could make a big difference becase it helps to get heat into the tyres - improving grip, nitrogen- filled tyres also help, because you can run a higher cold pressure than with air (with the same warm pressure)
keeping the weight forward will help traction too, like if you are carrying a load, keep it forward of the rear wheels, in the snow, i fill my footwell up with 80kgs and detune the engine - this turns the car from "undrivable" to good in the snow
With 360+Nm FWD and no form of traction control i get wheelspin all the time, coming out of wet roundabouts, or even in a straight line - all the way up to 80, oops i mean 70, you just get used to it and drive the car to the available grip, its the difference between a "driver" and just someone who drives, just be smoother/ use a little less throttle or short shift when the wheels start to spin