XC90 Aquaplaning - Page 3

MaDProFF · Oct 14th, 2018, 21:34

I have not noticed any difference between winter tyres I use and summer ones for wear usage, that said I do not drive everywhere like a lunatic hiring around corners or stamping on the brakes every time I need to stop.

SuffolkBoy · Oct 15th, 2018, 08:33

Quote:

Originally Posted by AB-UK

Typolee should note what Lexman8's attachment says about using winter tyres when it's warm.

My insurers (Ageas) wouldn’t insure me if I kept winter tyres on the car all year round when I enquired a couple of year’s ago, so changed to All Seasons.

Typolee · Oct 15th, 2018, 10:49

Quote:

Originally Posted by AB-UK

Typolee should note what Lexman8's attachment says about using winter tyres when it's warm.

Think you've misunderstood. I've got the winters on now not in July when I went to Italy!

AB-UK · Oct 15th, 2018, 12:54

Hi Typolee,
No misunderstanding.
It is really too warm for Winter tyres at the moment - they perform best below 7C.

exasperated · Oct 15th, 2018, 14:30

Just a thought - and this is a throw back to the early XC90's, of which I had one. I found this was happening to me, but after a year or so of seeing the ABS kick in too regularly, and getting stuck in the snow, we realised my 4 wheel drive had gone (car was only 4 years old at the time, probably 2.5 when it actually went).
So in new models I would think they've ironed out this particular issue, but might be worth getting checked...

Typolee · Oct 15th, 2018, 14:42

Quote:

Originally Posted by AB-UK

Hi Typolee,
No misunderstanding.
It is really too warm for Winter tyres at the moment - they perform best below 7C.

They were fitted a few weeks ago when we had the first frost. I ain't taking them off just for a few days of warm.

xc90fubar · Oct 17th, 2018, 11:27

Some interesting replies...!

They are Michelin Latitude Sport 3 on the standard R-Design alloys and car was new in May, now on 10,000 miles.

I do drive fairly rapidly on the continent but with 4 kids and The Boss in the car not excessively and certainly not in the wet. For context, the car was aquaplaning at 50/60 mph on the M1 in torrential rain a few weeks back. I have had some quite light sports-cars on wide tyres before (Lotus Exige for example) and even they were better..!

i disagree with the inability of Winters to cope with standing water, the Pirelli Scorpion Snow and ice that I ran all year round on my old shape 14 plate R-design were incredible and also that car (towing a fully laden ski trailer through nearly a foot of snow with 6 people on board from Chambery to Corchevel) was hugely impressive.

Will get a set of Winters put on and report back.

Haldex · Oct 17th, 2018, 14:26

Ofcourse, to each his own- but there's subjective impressions and there's laws of hydrodynamics..

In addition to summer rubber compound being softer ("stickier") in warmer temperatures, the two design elements to counter aquaplaning are circumferential grooves (depending on design/width, summer tires will have 3 or more of these..) and lateral sipes - the deep grooves "pumping" the water away through the lateral sipes.. No winter tire is designed this way- simply because there should be no standing water in winter conditions (6-7C and below..)

Typolee · Oct 17th, 2018, 14:31

Quote:

Originally Posted by xc90fubar

Some interesting replies...!

They are Michelin Latitude Sport 3 on the standard R-Design alloys and car was new in May, now on 10,000 miles.

I do drive fairly rapidly on the continent but with 4 kids and The Boss in the car not excessively and certainly not in the wet. For context, the car was aquaplaning at 50/60 mph on the M1 in torrential rain a few weeks back. I have had some quite light sports-cars on wide tyres before (Lotus Exige for example) and even they were better..!

i disagree with the inability of Winters to cope with standing water, the Pirelli Scorpion Snow and ice that I ran all year round on my old shape 14 plate R-design were incredible and also that car (towing a fully laden ski trailer through nearly a foot of snow with 6 people on board from Chambery to Corchevel) was hugely impressive.

Will get a set of Winters put on and report back.

Weird as I am very impressed with the Latitude Sports that came fitted on my xc90. Got my winters on now which are superb and offer increased comfort in cold weather due to the softer rubber

MaDProFF · Oct 17th, 2018, 22:28

@Haldex of course you must be right. Image is a winter tyre Nokian WR4

As for summer rubber being softer? not too sure on that one either?

Winter tyres are not just made for snow you do know that?

No standing water at 6ºc - 7ºc????

You are not convincing me of your hydrodynamics here

Oct 15th, 2018, 14:30	#25
exasperated Member Last Online: Aug 28th, 2021 14:01 Join Date: Feb 2010 Location: Cheltenham View Photos By: exasperated	Just a thought - and this is a throw back to the early XC90's, of which I had one. I found this was happening to me, but after a year or so of seeing the ABS kick in too regularly, and getting stuck in the snow, we realised my 4 wheel drive had gone (car was only 4 years old at the time, probably 2.5 when it actually went). So in new models I would think they've ironed out this particular issue, but might be worth getting checked... __________________ XC40, Red, 2018 plate, First Edition

Oct 14th, 2018, 21:34	#21
MaDProFF Master Member Last Online: Dec 10th, 2019 17:40 Join Date: May 2018 Location: London	I have not noticed any difference between winter tyres I use and summer ones for wear usage, that said I do not drive everywhere like a lunatic hiring around corners or stamping on the brakes every time I need to stop.

Oct 15th, 2018, 12:54	#24
AB-UK Premier Member Last Online: Yesterday 07:29 Join Date: Jul 2007 Location: Nottingham	Hi Typolee, No misunderstanding. It is really too warm for Winter tyres at the moment - they perform best below 7C.

Oct 17th, 2018, 11:27	#27
xc90fubar Junior Member Last Online: May 27th, 2023 08:33 Join Date: Feb 2011 Location: london	Some interesting replies...! They are Michelin Latitude Sport 3 on the standard R-Design alloys and car was new in May, now on 10,000 miles. I do drive fairly rapidly on the continent but with 4 kids and The Boss in the car not excessively and certainly not in the wet. For context, the car was aquaplaning at 50/60 mph on the M1 in torrential rain a few weeks back. I have had some quite light sports-cars on wide tyres before (Lotus Exige for example) and even they were better..! i disagree with the inability of Winters to cope with standing water, the Pirelli Scorpion Snow and ice that I ran all year round on my old shape 14 plate R-design were incredible and also that car (towing a fully laden ski trailer through nearly a foot of snow with 6 people on board from Chambery to Corchevel) was hugely impressive. Will get a set of Winters put on and report back.

Oct 17th, 2018, 14:26	#28
Haldex Premier Member Last Online: Dec 18th, 2023 13:17 Join Date: Mar 2018 Location: Paris	Ofcourse, to each his own- but there's subjective impressions and there's laws of hydrodynamics.. In addition to summer rubber compound being softer ("stickier") in warmer temperatures, the two design elements to counter aquaplaning are circumferential grooves (depending on design/width, summer tires will have 3 or more of these..) and lateral sipes - the deep grooves "pumping" the water away through the lateral sipes.. No winter tire is designed this way- simply because there should be no standing water in winter conditions (6-7C and below..)

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