They will crush the 19s but they will also have less life and be unusable in the snow..
Sure- that's why they call them SUMMER tires. You don't use them in snow. In snow you use snow tires (which also make all-seasons look awful in those conditions).
Above 40 degrees summers will stop shorter, handle better, accelerate better- basically be better in every single way (other than tire life) compared to the all-seasons on the 19s.
Below 40, actual
snow tires will do the same to the all-season 19s.
All seasons suck. In all season. When compared to dedicated seasonal tires.
That's the point.
They are a compromise that's not genuinely
good at anything.
If you live someplace it only snows a few days a year (or not at all) then get summer tires. They're better, and safer too.
If you live someplace you actually have months of real winter, get
two sets of wheels/tires, one summer, one winter, switch when the seasons change, and you'll have better, safer, tires ALL year compared to the all seasons.
also not everyone gets those the 19 inch wheels solely for performance. They do it for the look.
In which case they'd still get better actual safety and performance putting seasonal tires on those rims.
(though personally I don't like the look of the factory 19s, I get others might)
Also please show me any study that shows the continental pro contact as a “crappy tire”... again the fact that those tires are all season is a positive for some.
The only folks it's really a positive for are those who don't know that all-seasons are a compromise that are measurably worse than seasonal tires.
Tire Test: All-Season vs. Snow vs. Summer
There's Edmonds testing summer, snow, and all-seasons against each other- they tried to go with the 3 most similar tires they could (all from the same maker, all offered as OEM tires for the same factory car)... they actually ended up with Michelins (MXM4 vs PE2 vs PA3).
Their results?
In snow the all-seasons took over
60 feet longer to stop from 60 than the all-seasons did. The summers sucked of course- that's why if you live where it snows often you swap wheels in the winter.
In every condition above freezing? The all seasons sucked compared to the summers- In the wet in particular the all seasons again took nearly
60 feet longer to stop from 60 mph than the summer tires (58 exactly). It's not as awful in dry/warm, but the summers still stop 11 feet shorter even then.
Obviously some all seasons are better than others, but they're all pretty terrible compared to dedicated seasonals is the point.
And as you can see above I'm not talking better for drag racing, I'm talking about potentially stopping the car MANY car-lengths shorter than otherwise.