gohawks23

And as I have found in the past a greater risk of damage to the very expensive rims being handled by tire jockeys...

casaforte9

Got it , I observed this during test drives in north east . A 911 4s with summer tires in December (usual temps between 35 and 50 F ) on dry roads was ok to drive with diminished steering feel and not as much fun compared to same car driven in same weather on pilot Alpins- gripped better , rode better and felt closer to driving a 911 in summer on summer tires

A winter tire will let you drive in snow and on dry winter roads you can enjoy the car much more to its potential than with a summer tire

lucycan

Tell me more about the 993 Turbo S !!!

Joan Alcover

Purchased it in 1997 directly from Porsche importer for whom I was doing consultant work.
Got a 12% discount on list price.
Drove it during 19+ years to over 100,000 Kilometers.

Most memorable drives:

• "Big Four" Swiss Alps passes (Furka, Susten, Grimsel, Nufenen);
• ~ 10 Key passes of the "Route des Grandes Alpes";
• ~20 key mountain passes of the Italian Dolomites;
• Nevers-Magny-Cours F1 racetrack;
• Montlhery race track;
• Le Mans racetrack (short);
• Private Peugeot race track.

Sold it the same price I had paid for it (19+ years earlier)
Only problem was three broken fan belts ..... due to a bad belt pulley.
It is now with a dealer who specialises in "Porsche classics", as a "YoungTimer".

Joan Alcover

[QUOTE=inastrangeland;17176275]Check what "professional tyre testers" tell you on braking and cornering performance of winter tyres used in summer temperatures (road temperatures)

For instance: https://www.tcs.ch/fr/le-tcs/presse/...2019/pneus.php

Joan Alcover

In my case, living at 5,000 feet altitude with packed snow outside the garage at least 90+ days per year, I just cannot drive out of the the garage incline it there is snow and I am using summer tyres (with four-wheel drive, mind you).
It happened to me once, in 2005; the 993 Turbo S refused to continue once the four summer tyres were on the snow packed slope. The computer controlling traction could not cope with slip on the four wheels and just cut-off. I had to reverse back into the garage.
Since then, I have two sets of wheel; one for the summer, one for the winter.
In the winter, I easily pass Porsche Cayennes who hit the snow with summer tyres and have to stop to fit snow chains half way up the 10% slope!
I even once drove in over ten inches of fresh powder snow, going down form the village a 5,000 feet to the valley at 2,000 feet; I must averaged 25 mph, max!

inastrangeland

[QUOTE=Joan Alcover;17178344]My post was in regards to your comment that winter tyres should not be driven above 45F. Assuming you are not using centigrade. That is NOT true and hence my post. Your reference in no way supports that statement. Of course, winter tires will not perform as well as summer tires in summer temperatures, that is why we have summer tires. Pretty sure you don't change out your winter tyres whenever the temps are above 45 degrees in the winter, I know I don't.

I live at 6,000 feet elevation and we get plenty of sunshine so our winter temps can go from below 0F and up to 70F in the winter. Our winter tire season starts mid October to mid April.

As a reference, This January I drove 2500 miles going from Colorado, over 12,000 ft. passes in single digit degrees F, to Santa Barbara California with temps in the 80sF. Same winter tires the entire trip. I had no issues with handling braking etc, in any of those conditions.

It also pays to buy performance winter tires instead of the normal passenger car winter tires that are not designed to handle as well in both low and high temp conditions. There is a huge range of tire choices and it pays to get the good ones.

Gentian21

I think the issue with driving winter tires is warm temperatures is that they will wear very quickly. I don't think that the handling and steering would be too bad except at the highest temperatures. Still, the conventional wisdom is to get the winter tires off when temperatures routinely exceed 50 degrees F.

Joan Alcover

Here are comparisons of braking distances of different types of tyres at different temperatures on different road surfaces:

https://www.tcs.ch/fr/tests-conseils...ison-pneus.php

https://www.michelin.fr/auto/astuces...r-et-4-saisons

Hope they are useful.

Tupper

Well, after nearly 1 month in a garage I took my 911 out for a good long drive in upper 30's weather. It drove wonderfully on summer tires, although I didn't push it as much as I would have liked to.

Back in the garage again, I guess.......come on, sunny days!

justabout

Why not do some hard cornering (safely) on some lower speed turns to get some experience with the change in tire performance with temperature. The advice here frames the issues but is no substitute for experience with your tires.

m732sg

Reviving an old post. Driving cautiously, meaning not heavily spirited driving, on summer tires on mild winter days (~40 degrees, sunny) - does this damage the tire long-term? Seems like there's conflicting info on this.

Staffie Guy

I seriously doubt that driving a summer tire in sunny 40ish temps will have any impact on the tire. I recently had a corvette with summer tires that I drove in 30 degree weather with no salt on the streets for 7 years and the tires were fine.

GSIRM3

I think the all season tires are sold for those Lexus coupes.

russbert

The short answer, IMO, is NO. I have driven in those conditions many times in various Porsche's with no ill effects. Just be aware of the tire pressures as the cold temps do make a difference.

Otherwise, get out and enjoy yourself.