btw are you using winter tyres yet ? :pQuote:
Originally Posted by ioan
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btw are you using winter tyres yet ? :pQuote:
Originally Posted by ioan
Yep, with 18 degrees outside last week I was a bit sorry for them, law has to be respected, and also the corporate policy for the corporate car needs to be respected.Quote:
Originally Posted by donKey jote
I'm changing mine tomorrow. It's now 0°-4° here :s .
I'll be filling them with 78% Nitrogen and a mix of other gases, to ~2.0 bar cold :D
Still on summers here :wave:
Although the temps are gradually falling, the long-term forecast is for dry weather. This may turn out to be the latest that I've ever done the swap.
And I'll likely use the same mixture as donks :p : .
Still on my worn out No Weather Contis.
Thinking about these new Hanhook tires with summer tread on outside, all weather centre and winter inside edge.
Interesting concept but I expect there will be uneven wear pattern.
Note just thinking!
I'm on winters as of Saturday. 4 degrees and wet today, no wheelspin, yay!!!!!
The missus's SUV has been fitted with similar Good Year Fortenzas for a few years now. They work well in snowy/icy conditions, but the AWD probably contributes more than the tires themselves :mark: . No noticable uneven wear patterns on them.Quote:
Originally Posted by Easy Drifter
We had 0° when I changed them however 3 days later it was up to 15°, go figure.Quote:
Originally Posted by donKey jote
I've also heard that the mix 78% N and 21° O2, a bit of CO2 and some extra is a good one, and also dirt cheap (for now at least). ;)
I thought that the point of Nitrogen gas in tyres was that N2 is a physically bigger chemical that most of the other constituents of air (like O2 which is smaller), and that because N2 is larger it doesn't seep out through the tyre walls and valves as much.
I made a point of checking the pressures on the Ka when I filled the tank, which was weekly. They typically ran between 40psi and 43psi, to cut down on rolling resistance and therefore increase fuel economy.
My wife's Skyline is an altogether bouncier car which runs all four tyres at 32psi without fail. Nissan recommends 28psi and Goodyear recommends 32psi, and I'm more inclined to follow the tyre company because they're tyre specialists whereas Nissan wants to give you a kinder ride.
Although what you say is true, the reason as actually one of temperature stability where the PSI isn't affected as much by the tyre temps.Quote:
Originally Posted by Rollo
Daniel,
"the pressure inside the tire affects friction and therefore performance. Pressure is determined by the characteristics of the tyre, weight of vehicle and circuit layout. Pressure affects both grip and consistancy of the tyre, it should be at a minimum to get the maximum area of rubber on the ground but high enough to minimise heat generation by tyre deformation and keep the tyre bead seated on the rim.."
http://www.bridgestonemotorsport.com.../glossary.html
On a slimy salted road where the grip is even lower than a mere wet surface, that lower grip stops the tyre rolling/deforming where it would on higher grip surfaces.
Yes as Ioan says , reducing the tyre pressure makes the steering a tad less direct (only 2 PSI remember) but that tiny pay-off is still more than worth it for the advantages it brings, just my own findings.