Toyota Prius - winter tyres - greenprius

just fitted Nokian winter tyres to my prius should the psi in the tyres be the same as the standard tyres

Toyota Prius - winter tyres - 1litregolfeater

I would let them down a bit.

Or at least if I were one of the local kids I might.

Toyota Prius - winter tyres - Collos25

They should be exactly the same pressure as as anyother tyre fitted to the vehicle.

Toyota Prius - winter tyres - greenprius

strange

Toyota Prius - winter tyres - skidpan

If you want strange.

Pump them up to about 60 psi you will get much better fuel economy.

The tyres will last longer as well plus they will be virtually puncture resistant.

The ride will be a bit hard but in the snow you will not notice it.

Other than that pump them to the recomended pressure for the tyre size. They are simply tyres with a different tread pattern and a rubber mix more suited to cold weather thus why should the pressures be any different.

Toyota Prius - winter tyres - unthrottled

Less prone to aquaplaning too.

I always 'overinflate' the tyres above what the handbook recommends but below the maximum permitted pressure printed on the sidewall.

It makes me chuckle when people agonise over 34 vs 36 psi and claim that the difference in handling is huge.

Toyota Prius - winter tyres - gordonbennet

I usually run my winter set, indeed all my tyres at the lowest recommended pressure for the vehicle load and speed.

My reasons being an increased footprint which i believe must be better for wet and poor grip conditions and smoother ride.

I run Nokian WRG2's as winters on my ancient MB and i think there is a scale of pressures approved by Nokian which vary according to size, can't remember if its on the sidewalls or on their website.

Toyota Prius - winter tyres - thunderbird

I usually run my winter set, indeed all my tyres at the lowest recommended pressure for the vehicle load and speed.

My reasons being an increased footprint which i believe must be better for wet and poor grip conditions

Wrong, theoretically at least. By increasing pressure you actually open up the tread pattern which moves the water better and gives a slightly narrower profile which is better in poor conditions.

Toyota Prius - winter tyres - Collos25

Correct lowering air pressure below recomendations results in worse grip .

Toyota Prius - winter tyres - gordonbennet

Oh dear, i did say lowest recommended pressure.

Toyota Prius - winter tyres - Collos25

The only variations in pressure are depentant on the load not the weather.

Toyota Prius - winter tyres - gordonbennet

The only variations in pressure are depentant on the load not the weather.

and speed

Toyota Prius - winter tyres - Collos25

no

Toyota Prius - winter tyres - gordonbennet

yes, MB's have tyre pressure sticker inside filler cap as you will know, recommended pressures relate to number of passengers/luggage OR by road speed.

Toyota Prius - winter tyres - Collos25

I am now happily retired and have only a small BMW no need for anything else if it was just my choice I would not even have a car of my own.

Toyota Prius - winter tyres - oldtoffee

I was told that Vredestein recommend 2.8bar for my Wintrac 4 Xtreme tyres. Their website confirms it. This is .6 bar over the car manufacturers . I tried this when I first had them and the ride was very stiff. I've settled for 2.4 which is comfier and the tyres work well in all conditions especially the wet and last year's one week of snow.