It is one of these:
https://www.blauparts.com/routine-maintenance/oils-fluids-lubricants/motor-oils/ravenol-5w_50.html?gad_campaignid=20299934522&gad_source=1&gbraid=0AAAAAD6u7WeC8lCxj8bOW0YaS_l8bvrOJ
I used PS4S tires for years on my Audi without being aware of this warning, and drove all the time below freezing, but we almost never see below -7C (20° F). It looks like even supporting a vehicle is out if it gets that cold.
And I would consider running the 305 on the rear, instead of the 325. The 305 comes closer to the Trofeo RS tread width and height and tread width.
See the Specs...
Those look like great tires, but I mention this only because of your location in Ontario.
"Note: Tires exposed to temperatures of 20 degrees F (-7 degrees C) or lower must be permitted to gradually return to temperatures of at least 40 degrees F (5 degrees C) for at least 24 hours before they...
Could that be the result of them being a new tire?
They were released only a few months ago, taking aim at the Hoosier market.
https://www.caranddriver.com/news/a64792871/pirelli-trofeo-track-dot-approved-racing-slick/
Splitter?
Front slightly down, rear slightly up, like 2 degrees. Check your class as well, as some have specific limits in the rules, like no more than 3 degrees. You also need to be aware of where the air is going after the splitter (radiator, coolers, ducted to brakes, etc.). You do not...
Has anybody used these? They come in the same sizes at the Trofeo RS
https://www.tirerack.com/tires/tires.jsp?tireMake=Pirelli&tireModel=P+Zero+Trofeo+Track&sidewall=Blackwall&partnum=03YR9P0TT&tab=Sizes
The 295 PS4S has 1.2" more tread width than the 305 Pirelli Trofeo RS, so you are not going to get that "stretch in the sidewall."
The 305 PS4s has 1" more tread than the 315 Pirelli Trofeo RS, but these two are pretty close in tire height.
LOL, I forgot I posted this video
https://www.mustang7g.com/forums/threads/dark-horse-handling-package-tires-trofeo-rs-tires-vs-nanking-cr-s-track-test.170451/
But that was a Porsche.
Anybody use these for track days?
I was thinking about getting some with the tread width and tire height matched as closely as possible to the Trofeo RS that came on my car (ignoring the 350mm, etc., just match up the specs).
They are a lot cheaper than the Trofeo RS.
YouTube reviews on track...
LOL, they start out with only 6/32 of an inch of tread. That is 3/16" - not even a quarter inch. 50% gone at 5000 km is pretty decent, considering it is a 180 Treadwear tire.
There is no emergency to replace it.
I have over 4000 miles on mine, (about 6500 kilometers), including 2.5 hours...
https://www.tirerack.com/tires/tires.jsp?tireMake=Michelin&tireModel=Pilot+Sport+All+Season+4&sidewall=Blackwall&partnum=835YR9PSAS4XL&tab=Sizes
285/35/19 are about 3/8 of an inch less thread width than your stock rear tires, and about 2/5 of an inch taller. They are 1/5 of an inch wider than...