Tyre Wear

Author
Discussion

Jockman

17,917 posts

161 months

Friday 8th June 2012
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Luddite said:
If it says 235-40/19...... It means they were made at 2:35pm The 4th month (April) and nineteen refers to galactic years and means 2009...

Hope you find that useful matebiggrin
Oh you're on form matey wink

Harking back to GTDB7's point on the Geo settings and how they impinge upon tyre wear, will you still be available for a Geo run out between Hever and the Welsh Border run or will you be in France??

I can always take George if you're busy wink

Lunablack

3,494 posts

163 months

Friday 8th June 2012
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Jockman said:
Oh you're on form matey wink

Harking back to GTDB7's point on the Geo settings and how they impinge upon tyre wear, will you still be available for a Geo run out between Hever and the Welsh Border run or will you be in France??

I can always take George if you're busy wink
Not sure when Hever and Taffy runs are.... But if it helps we're looking at buggering off on the 19th/20th june... And I'll come back end of July, or maybe 1st week in Augustsmile..... But if it's really nice I might not come back until end Augustcool

Jockman

17,917 posts

161 months

Friday 8th June 2012
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Ok Luna I shall bear that in mind smile

BingoBob

1,098 posts

148 months

Saturday 9th June 2012
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Murph7355 said:
Even when lower than 3mm on tread it's perfectly docile with the traction control on, and I even used it with it off for a little while and it was nowhere near the handful that, say, a Griffith is smile
I refer you to the wet stopping distances graph where you can clearly see a marked increase of stopping times that starts around the 3mm tread depth point:

http://www.rospa.com/roadsafety/adviceandinformati...

rospa said:
From the graph of results, it can be seen that the stopping distances in the wet start to increase dramatically at tread depths of below 3mm.

Murph7355

37,760 posts

257 months

Saturday 9th June 2012
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BingoBob said:
...ROSPA chart...
None of which implicitly means that a car is more likely to be in an accident.

You drive according to conditions - rain, snow, road type, visibility, handling capability of the car etc.

If you boys and girls are driving at ten tenths 100% of the time you're on the road then maybe the chart becomes a major concern. But to be honest, on modern roads, that would lead me to have far greater concerns.

I still maintain that a V8V is perfectly controllable and safe (and very enjoyable) with sub-3mm of tread depth.

(PS Why is the legal limit set at 1.6mm and not 3mm? Genuine question. Don't know the answer).

BingoBob

1,098 posts

148 months

Saturday 9th June 2012
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Are you really so afraid of being shown to be incorrect that you are willing to perform such contortions of logic?

yeti

10,523 posts

276 months

Saturday 9th June 2012
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BingoBob said:
Are you really so afraid of being shown to be incorrect that you are willing to perform such contortions of logic?
Laughed out loud at that smile

My car on sub-3mm was safe, contollable and fun. However, when I put new tyres on, the difference was amazing; acceleration, braking, turning, everything was sharp, predictable and confidence inspiring.

So that's why the legal limit is 1.6mm... it's functional and safe, but is it as good as 3mm+? Not on your nelly!

George H

14,707 posts

165 months

Saturday 9th June 2012
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Jockman said:
I can always take George if you're busy wink
You say that like it's a chore! grumpy

Jockman

17,917 posts

161 months

Saturday 9th June 2012
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George H said:
You say that like it's a chore! grumpy
The little wink at the end tells you everything you need to know Mr Grumpy biggrin

You really want to stick 150 miles on your clock just to watch my car on a Hunter machine ?? Be my guest matey smile

Murph7355

37,760 posts

257 months

Saturday 9th June 2012
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What contortions? What I was getting at was that in the wet, there are factors way above and beyond 1.4mm of tyre tread that increase one's chances of having problems.

And in respect of being correct or not, I've actually driven my car many miles on tyres from brand new down to near the legal limit. It was fine.

If you want to change your tyres at 3mm, fair enough.

Personally I think it's a waste.

Neither opinion is right nor wrong. It's an opinion and others can choose to go one way or the other.


Edited by Murph7355 on Saturday 9th June 21:52

Lunablack

3,494 posts

163 months

Saturday 9th June 2012
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If your stopping distances are increased due to worn tyres..... Just brake a bit earlier to compensatehehehehe

I tend to swap mine when they get around the 2mm mark..smile

Jockman

17,917 posts

161 months

Saturday 9th June 2012
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I believe my rears were at 3.2 when changed in March - I don't have the report to hand. I also believe the AM recommendation for changing is sub 4.0 at service time smile

KarlFranz

2,008 posts

271 months

Saturday 9th June 2012
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I think the contortion is that you said:

Murph7355 said:
You drive according to conditions - rain, snow, road type, visibility, handling capability of the car etc.
But you fail to mention that all of the above will have to be dramatically compensated for based on whether your tread is less than or greater than 3mm.

This and the fact that the OEM tires are very noisy and stiff below this tread boundary.

Murph7355

37,760 posts

257 months

Saturday 9th June 2012
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KarlFranz said:
But you fail to mention that all of the above will have to be dramatically compensated for based on whether your tread is less than or greater than 3mm.

This and the fact that the OEM tires are very noisy and stiff below this tread boundary.
Perhaps I have zero driving finesse (to go with my lack of it in all other departments), but I did not find I had to "dramatically compensate" once the tread dropped below 3mm.

Nor, frankly, did I notice any material difference in noise or discomfort. But then I am fat and probably deaf too.

smile

The other known high miler in his V8V doesn't seem to perceive problems with sub-3mm tread either. Perhaps we're just weird.

(btw, my rears are sub 3mm now)

Jockman

17,917 posts

161 months

Saturday 9th June 2012
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Can't say I would notice the difference in comfort or noise - perhaps more for the purists KF - but I'm willing to accept that I will notice the braking differential smile

F1NDW

361 posts

152 months

Saturday 9th June 2012
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Jockman said:
I believe my rears were at 3.2 when changed in March - I don't have the report to hand. I also believe the AM recommendation for changing is sub 4.0 at service time smile
And they are quite right Phil. They make the assumption that it will not make it to the next service, and want to keep you safe.

KarlFranz

2,008 posts

271 months

Sunday 10th June 2012
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Jockman said:
Can't say I would notice the difference in comfort or noise - perhaps more for the purists KF - but I'm willing to accept that I will notice the braking differential smile
Where I live we have very nice smooth highways and at speeds of 70mph or higher the rear tires on my car started making a roaring drone once I passed 12K miles. I don't think it would have taken a purist to detect the difference. It was loud enough that my OH had a hard time hearing the other party during phone calls on her mobile while riding with me. At the time, I was not aware of the difference in tread compound for the last 3mm of useable tread life some have mentioned.

When I went shopping for replacement tires, my criteria was for a quieter, softer ride with good wet and dry grip. My search yielded the two highest rated tires being the Michelin Pilot Super Sports and the Continental ExtremeContact DW. I would have preferred the Michelins but they weren't available in the sizes I needed back then. I have only replaced the rear set thus far, but the difference is quite noticeable.

robgt

Original Poster:

2,585 posts

163 months

Sunday 10th June 2012
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So far my best quote for two tyres is £575.40 inc VAT fitted. That is from a local company in Hereford. The tyres being Bridgestone Potenza. Worst quote £720 that was from a national company that I would love to name. Does my best price sound about right? Should I consider another make?

BingoBob

1,098 posts

148 months

Sunday 10th June 2012
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I am a huge fan of the Michelin PSS. I am disappointed with the grip of the OE Bridgestones and can't wait to wear them out (that's 3mm, by the way wink ) so I can put some on the Aston.

Try the PSS and if you don't like them I'll have them off you. smile

Edited by BingoBob on Sunday 10th June 09:37

BingoBob

1,098 posts

148 months

Sunday 10th June 2012
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Robgt, have you tried Camskill?