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Tyre test reported in Which? magazine - Roger Jones
For what it's worth, Which? magazine ranks tyre quality thus (top five from each group, with scores):

17"
Michelin Pilot Sport ("best on test", equal best on wear) 73%
Bridgestone Potenza 71%
Continental SportContact3 70%
BFGoodrich G-Force Profiler 68%
Pirelli Pzero Nero 68%

14"
Bridgestone Turanza ER300 ("best on test", best overall on wet braking) 70%
Pirelli P6 65%
Nokian NRHi 64%
Continental EcoContact 3 63%
Vredestein Hi-Trac 63%

Michelin and Bridgestone prices knock them out of the best-buy stakes, but shop around, of course.

No surprises there, then.

(Score scheme: 40% wet-road grip, 24% wear, 20% dry-road grip, 8% rolling resistance, 4% noise, 4% environmental rating)
Tyre test reported in Which? magazine - SjB {P}
In what profile on what type of car?

I have Goodyear Eagle GSD3 F1s in 225/45x17 size on my V70 and find them a stonking tyre. Terrific dry road grip - they are the first tyre to contain 444NM torque from my chip tuned engine in second gear - and unbelievable standing water abilities. They are also the quietest low profile tyre I've encountered on any V70 (I have driven many) and are wearing at least as well as the horrid P6000s the car came from the factory with.

Surprised by their absence.
Tyre test reported in Which? magazine - Cyd
Totally agree with SjB. I have 215/45/17 F1 GSD2s on my Rover Vitesse Sport and find them to be absolutly brilliant in the wet. Wear rate is very acceptable. Not so sure about being quiet tho' - they could be better at that.
Tyre test reported in Which? magazine - Roger Jones
You'll have to get further details from the Consumers Association. I suspect that the test was carried out in cooperation with their European affiliate organizations and I would be surprised if it wasn't extremely rigorous. If they aren't objective and impartial, who is?

www.which.co.uk
Tyre test reported in Which? magazine - bikemade3
Vredsteins come highly rated in a German auto test report. Available at about 2/3rd's the price of Michelin Energy's, i've bought a pair recently and am about to buy another pair in the next 2 months to replace the Avons fitted to the front of my Mondeo. Cn't fault them, good tyre.