 Poster: A snowHead
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Axsman,
Winter tyres often have smaller dimensions to summer tyres.
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Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
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Well, the person's real but it's just a made up name, see?
Well, the person's real but it's just a made up name, see?
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Helen Beaumont & boredsurfin,
Winter tyres wear out much more quickly in the summer and unsurprisingly don't perform as well as normal summer tyres in warmer/dryer conditions.
The Duellers get good reports but the winter tyre most liked from Bridgestone are the Blizzaks, perhaps it was suggested that you should change to these when your Duellers need replacing.
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You need to Login to know who's really who.
You need to Login to know who's really who.
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Anyway, snowHeads is much more fun if you do.
Anyway, snowHeads is much more fun if you do.
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Ok done a bit of research, I like the sound of the 'All weather' tyres that are M+S rated. (don't really want the faff of changing them each autum/spring, and then maybe being caught out with the 'wrong' set on. looking around, the Goodyear Wrangler HP's seem to score well on grip in dry, wet and snow conditions, and are available from mytyres for only £69.20 delivered. Anyone had any experience of these ?
The Pirellis mentioned earlier are also available (at £2 less) but don't score so well for grip or wear.
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You'll need to Register first of course.
You'll need to Register first of course.
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Hey guys i have Bridgestone Dueller h/t 840's on my mitsubishi animal. anyone know what these are like driving in the snow. am driving out to tignes for the season this year so any help would be good
cheers
ben
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benpudney, ours were fine last winter.
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You'll get to see more forums and be part of the best ski club on the net.
You'll get to see more forums and be part of the best ski club on the net.
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Here is a diagram showing the braking distance of a 4x4 from 80 km/h (50 mph) on a snow covered road.
a) Winter Tyres = 67m
b) Summer Tyres = 108m (49km/h after 67m)
c) All season tyres = 82m (35km/h after 67m)
http://www.oeamtc.at/netautor/download/document/viermalvierreifen.pdf
Last edited by You'll get to see more forums and be part of the best ski club on the net. on Tue 3-10-06 9:33; edited 1 time in total
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What are the implications of fitting winter tyres to a car which are slightly smaller than its normal size? My new car is shod with 235/45 R18, but I have a lightly used set of 225/45 R17 (Toyo SnowProX) from my previous car. If I got a set of steel rims to fit the winter tyres would it be possible to use them on my new car? How would performance be affected? Would the speedo read the correct speed if there is a different tyre circumference from what it is expecting? And does anybody know how to disable the tyre pressure sensor system in a Peugeot 407?
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snowHeads are a friendly bunch.
snowHeads are a friendly bunch.
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rob@rar.org.uk,
The first number of the tyre designation is the width in mm, the second is the aspect ratio between the width and the height of the rubber while the last is the rim diameter in inches. Yep they still use both Imperial and metric in the tyre industry.
As 1"=25.4mm and so the diameter of your two tyres are 235/25.4*0.45*2+18 =26.327" and 225/25.4*0.45*2+17 =24.972" respectively. The ratio of the circumference, which is equal to diameter * 3.14159, is therefore 1: 0.949 (or 1.054:1). Therefore driving your new car with the second set of tyres will mean the speedo, normally based on the revolutions of the axle, is out by 5.4% slower. If you are caught doing 105.4mph the policeman can only prosecute you for doing 100mph as he must have his speedo regularly calibrated.
I would just use the old set of tyres and not getting excited about the car capable of doing a top speed higher than the manufacturer's figure.
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And love to help out and answer questions and of course, read each other's snow reports.
And love to help out and answer questions and of course, read each other's snow reports.
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saikee, thanks for that, I guessed it would be something like that, but I'm glad you did the math for me 
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You know it makes sense.
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saikee, I'm not a tyre fitter but surely you've missed the most important point in rob@rar.org.uk's question, and thats the fact the the rim sizes are different - R17 v R18 eg 17 & 18 inch diameter wheels. He would need to get a set of 17in rims, now we can talk speedo errors & PCD's & patten of wheel mounting holes.
Sorry.
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Otherwise you'll just go on seeing the one name:
Otherwise you'll just go on seeing the one name:
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| Scud wrote: |
saikee, I'm not a tyre fitter but surely you've missed the most important point in rob@rar.org.uk's question, and thats the fact the the rim sizes are different - R17 v R18 eg 17 & 18 inch diameter wheels. He would need to get a set of 17in rims, now we can talk speedo errors & PCD's & patten of wheel mounting holes.
Sorry. |
The plan would be to get a new set of rims. What are PCD's and are there different wheel mounting holes?
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Poster: A snowHead
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Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
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I run a 3.2 Shogun diesel and the dealer offers 16", 17" and 18" alloys, all with different widths and aspect ratios but the overall diameter remains unchanged. Thus I believe you should be able to get a set of rims to fit the snow tyres slightly smaller than the stock size.
I have 2 sets of "all-season" tyres on 16" alloys off my last Shogun waiting to fit the new one, shod with 18" alloys, when I go skiing. I would be surprised if they don't fit. In my case the lower model has my 16" alloy and the Warrior I drive uses the largest 18" alloy.
You do need to find a set of rims carefully to fit the new Peugeot 407 but if you say it is for such a vehicle the supplier would ensure it fits. The rims also has a width but I would have thought within one size difference the tyre should go in. I would give the tyres to the rim supplier to fit and only buy if everything fits. Let him worry the no. of holes and pitch circle diameter.
Regarding the offset I would only worry if the non-stock tyres are bigger so that they may rub against the wheel arches.
I could be wrong but the 4-hole to 6-hole alloys must have been standarised enough to support the alloy making industry. People who purchase a new set of steel or alloy rims are expect to reveal the make of the car.
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Well, the person's real but it's just a made up name, see?
Well, the person's real but it's just a made up name, see?
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Here's the latest tyre tests from the ÖAMTC (Austrian AA equivalent)
There's a new test for the 205/55 R16 H tyre size (which just so happens to be the size of winter tyres I require)
http://www.oeamtc.at/tests/reifen/
Bottom line is that the Semperit Speed grip looks to be a fantastic snow/ice/wet (Schnee/Eis/Nass) tyre knocking the Goodyear Ultragrip Performance clearly off the top spot. The goodyear is still a good tyre though and handles better than the Semperit in the dry (Trocken)
Bremsen = Braking
Geräusch = Noise
If anybody needs to translate more german terms http://dict.leo.org/
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You need to Login to know who's really who.
You need to Login to know who's really who.
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If you go to Google's language tools at http://www.google.co.uk/language_tools?hl=en you can get DB's page and all linked pages translated into English.
Enter the web address in the translate section of the page - and don't forget to set the language options properly!
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FAQ
With winter tyres driving over here is safer on wet or slippery roads. 
tyres of the same dimension ....errrrgghhhh....tend to have the same dimension? 
so popped into my local ETC who offered me the Pirellis for £75 fitted and balanced. Having them done tomorrow. (The car just had its 24000 service today and needs new tyres all round anyway). Hopefully the scorpions will still have some tread left by December! 
