On my 156 I'm running 215/45 17s... Westlake, SV308. The make sounds like a boy band! Made in China, these are also sold as Goodride SV308. I know what you're thinking, but this like a lottery win, otherwise I wouldn't bother writing this. I checked and they are available in England, Canada, the USA, and Germany.
I'm so impressed with them, as they are quieter than the Goodyear Eagle F1 asymmetrics I had before, have better steering feel than Michelin Energy X, more grip than Hankook or Kumho, especially as they work well in the wet (relatively soft compound and many fine sipes in the directional tread pattern), and fairly long lasting (treadwear 280 (EDIT: seems I was wrong, it says 340 online) about half-worn after 31,000km). Even the sidewalls look good with no browning (stable, silica compound). Balance/roundness is very good with the largest required weight being 15g. No unsightly moulding flash. Rated up to 60psi, traction AA. I run at just 34psi and still get amazing fuel economy, no tramlining at all.
I've never heard these tyres squeal or felt them slip. They also cost just $85/each (about £40) which is a pleasant bonus for such a good quality tyre. I haven't moved them front-rear as at this price I'll just buy two new fronts when they get down to 2.5mm tread.
I then recommended Westlake/Goodride to a friend and he bought some other ordinary version in a 195/60/15 size and they were absolute ****
noisy, hard, dangerously wobbly... So if you're buying cheap Chinese crap tyres, they HAVE to be the high-performance directional TUV-approved type and absolutely NOT any other version...
and especially avoid Triangle, Linglong, Kingstar, and Wan-Li... actually, just avoid any Chinese-made tyre except for Westlake/Goodride SV308...