depends how fast you're driving? :p
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depends how fast you're driving? :p
Braking distances are longer, less lateral grip, more wear etc etc.Quote:
Originally Posted by schmenke
Even Caroline noticed the increase in grip and that was going from a 195 to a 175 which is obviously 10% narrower. Not the difference between life or death but if a woman notices it!!!! *runs and hides* :p
Allow me to rephrase Donky... :arrows:Quote:
Originally Posted by donKey jote
I've been lead to believe that a summer ti(y)re commound is not suitable for dry pavement in cold weather.
I've also been lead to believe that you were somewhat of a subject matter expert in many things vulcanized :erm: .
Donks is a Trekkie? :confused:Quote:
Originally Posted by schmenke
:p
That's good! Why complain?Quote:
Originally Posted by janneppi
If the snow is falling horisontally, it will never hit the ground, therefore it will never pile up on the road....by this rigid logic you should not need any snow tires, just really good windscreen wipers and defrost..
Thanks Daniel.Quote:
Originally Posted by Daniel
The reason I'm asking is that winter precipitation in my neck of the woods can vary quite a bit. Cold temperatures are a given, but we have been known to have relatively little snowfall. I can see myself keeping the summer ti(y)res mounted well into the winter season if we have little snow :mark:
And if there is ice or the road is dry.Quote:
Originally Posted by donKey jote
ok you asked for it... here's my donkey view:Quote:
Originally Posted by schmenke
One of the characteristics of a rubber compound is called it's glass transition temperature Tg. This Tg defines the transition of the rubber from being viscoelastic to being -you guessed it- "glassy".
For normal temperatures, grip actually tends to increase with decreasing temperature, as rubber becomes more visco-elastic and less elastic (better grip vs worse rolling resistance).
However go too low and rubber loses it's rubberness and grip altogether.
Now, if you have shight summer tires (i.e. the standard mileage oriented rubbers you tend to prefer over in the N of A, which tend to have more natural rubber and a lower Tg) then you probably won't notice too much difference on a dry pavement as it gets colder within reason.
However if you have high(er) performance tires (i.e high grip focus compounds), then your tires can get noticeably harder and/or brittler as the temperature decreases -> less grip.
I wouldn't recommend parking your Porsche outside at -40°C for example, or when you start to roll your tires might break :p
To summarise, for dry roads I wouldn't expect too much of difference at around 0°C with your standard lower grip/higher mileage tires. 0°C is a dodgy temperature though- black ice and all that.
Whatever your tires, summer or winter, you need to know what you have and drive accordingly :)
and if you have snow, then get proper winter tires with a snowflake symbol. "M+S" doesn't have anything to do with winter performance ;)Quote:
Originally Posted by schmenke
Yes that just meanst that there is a certain percentage of cuts in the tyre right?Quote:
Originally Posted by donKey jote