[qa15ar]

Originally Posted by gIzzE

I hope you're not mixing them with run flats??!!!





Conti sport contacts are not great imho, however, 40psi??!!
That sounds like run flat pressure, I would think 33f and 36r at most would be fine.

I am putting these on the front....

http://camskill.co.uk/m61b0s2560p985..._Noise%3A_72dB

They are runflat apparently???

[MERLIN335i]

Originally Posted by qa15ar

I am putting these on the front....

http://camskill.co.uk/m61b0s2560p985..._Noise%3A_72dB

They are runflat apparently???

These are not 5P's, the ones you have ordered are a totally different tyre, in type, size, and construction, so hopefully my problem will not apply to you

[qa15ar]

Originally Posted by MERLIN335i

These are not 5P's, the ones you have ordered are a totally different tyre, in type, size, and construction, so hopefully my problem will not apply to you

Phew- Thanks

[gIzzE]

You really don't want to mix tyres on a BMWS front and rear, different tread patterns can really, really screw the handling of the car up.

[qa15ar]

Originally Posted by gIzzE

You really don't want to mix tyres on a BMWS front and rear, different tread patterns can really, really screw the handling of the car up.

I agree... but i spent most my time in 1st and 2nd gear in traffic, not many twisting, fast roads in london- lol

[MERLIN335i]

Originally Posted by zltm089

have u got pics?

Just for you Kev, and no sweet & sour sauce on these ones please

[Hotcoupe]

Originally Posted by MEGA

But Ian didn't you have wider than stock tyres so need higher pressures?

In any case - I'm keeping an eye on this topic given I run the 5P's !

Widest I went on the front was 235,so a tad wider than stock, rears I went up to 275.
Pressures were similar to Michael's, at 38/41.

I'm not convinced that a wider tyre should need a higher air pressure than a narrower tyre.

I don't think I've ever read of anyone running NRFT's at 32psi,I could understand it on a track day where the tyres will get much hotter than day-day driving,but there you go.

Lets hope Michael gets a satisfactory resolution,looking at the latest pics,I'd say they were a faulty batch,so should be replaced foc.

Back to squidgyness- I prefer a firmer and natural 34D cup,it would be a shame to waste any

[A_P]

On flipside to all the comments:

Firsly I totally agree with Houtcoupe about 38ish mark for non run flats. However in the case of the 5P's I am not so sure.

When I ran them I ran them 35 front 37 rear. In summer they felt better on 34f and 36r. Any higher than this and they felt rock hard!!!.

Now I doubt very much that running 39 would cause such cracking? I think it may be more of an issue with either manufacturer defect or more likely they were old stock which have been left lying around for a long time in non ideal conditions?

Anyway hope you get it sorted.

[MERLIN335i]

Originally Posted by A_P

or more likely they were old stock which have been left lying around for a long time in non ideal conditions?

Anyway hope you get it sorted.

My tyres were made nine weeks before they were fitted.

With the faulty set, I specified that all four were to be the same production week, and less than three months old. Just need to talk nicely to a friendly warehouseman to go through the stock, before despatch.

The new (replacement) tyres will also be the same as above.

I am the fussiest man on the planet.

[A_P]

Ok wow. lol. Fair play to you.

Must be a faulty production batch then, I can not see it being anything else now.

Hope you get it sorted.

[ade146]

Remove tyres with concrete sidewalls and replace with spongy tyres then run them at even less pressure for extra sponge? I buy extra load tyres and run them at 40 ish. Seems not far off the proper feel.

[gIzzE]

Originally Posted by ade146

Remove tyres with concrete sidewalls and replace with spongy tyres then run them at even less pressure for extra sponge? I buy extra load tyres and run them at 40 ish. Seems not far off the proper feel.

Don't confuse sponge with bite.

I swapped my M3 19s for 18s to get more bite, it had the added bonus of being comfortable as well, but the main reason was for better grip when 'really' pressing on.

[Squintstream]

Originally Posted by ade146

Remove tyres with concrete sidewalls and replace with spongy tyres then run them at even less pressure for extra sponge? I buy extra load tyres and run them at 40 ish. Seems not far off the proper feel.

I agree and do the same.

However, the OP was using XL's too. But this does seem to be a bad batch (touch wood).

Hope you get it sorted Merlin!

[zltm089]

Thanks for posting Michael.

Hope you get everything sorted.

[A_P]

40ish is crazy hard lol. fair enough if thats what you guys prefer.

[MERLIN335i]

Originally Posted by Squintstream

I agree and do the same.

However, the OP was using XL's too. But this does seem to be a bad batch (touch wood).

Hope you get it sorted Merlin!

Originally Posted by zltm089

Thanks for posting Michael.

Hope you get everything sorted.

Guys,

Thanks for you support, as I said previously, it appears that it will be a few weeks before I get the report back from Conti.

Will post the results, as soon as I have them.

I realise this will have reached very few 5P owners, but those who have may not have checked them, there have not been any "mine are OK", comments, sure there were at least a good dozen who have them .

Michael.

[Revlis]

Originally Posted by MERLIN335i

My tyres were made nine weeks before they were fitted.

With the faulty set, I specified that all four were to be the same production week, and less than three months old. Just need to talk nicely to a friendly warehouseman to go through the stock, before despatch.

The new (replacement) tyres will also be the same as above.

I am the fussiest man on the planet.

Yeah but in the photos they look very much like OLD OLD rubber. Wild, the pics you posted above I swear in court are of a 7-9 year old tire... All the Micro Cracks, etc, they look really aged.

[Hotcoupe]

Originally Posted by Revlis

Yeah but in the photos they look very much like OLD OLD rubber. Wild, the pics you posted above I swear in court are of a 7-9 year old tire... All the Micro Cracks, etc, they look really aged.

Strange,you buy tyres (NOT tires) fit them to a wheel,drive on them and they wear and then look old,who'da thunk it!

I do hope you're not a lawyer,or perhaps you were

[Revlis]

Originally Posted by Hotcoupe

Strange,you buy tyres (NOT tires) fit them to a wheel,drive on them and they wear and then look old,who'da thunk it!

I do hope you're not a lawyer,or perhaps you were

Oh shit! Good on ya I forgot the "correct" spelling of tyre in the Queens English.

Not a Lawyer, but I've pulled all sorts of summer "Tyres" off my cars and none of them looked that old and grey even after a few summer months. I know Ole' Blighty can be hard on equipment, but damn.

However, if I was indeed a Barrister? Maybe a Solicitor, I would put forth that the posted photos are NOT of Tyres that are a mere few months old.

Cheers

[John320d]

If this happened to me, I think the first thing I would do is check my tyre pressure gauge for accuracy.

[MERLIN335i]

Originally Posted by John320d

If this happened to me, I think the first thing I would do is check my tyre pressure gauge for accuracy.

Checked & Calibrated every three months, as are my torque wrenches, etc, etc.

A requirement and standard practice in my profession.

[MERLIN335i]

Originally Posted by Revlis

Yeah but in the photos they look very much like OLD OLD rubber. Wild, the pics you posted above I swear in court are of a 7-9 year old tire... All the Micro Cracks, etc, they look really aged.

Just to be clear, I stated that I would not accept tyres that were older than three months at the time of fitting, I did not say they were only a few months old.

The tyres have done 7600 miles, and were made in Week 3, 2011.

What you lot over the pond need to remember, is that over here we have things called bends, and lots of them, (my tires get a hard time, as the heavily feathered edges show). We don't all have arrow straight roads, with no need to turn the steering wheel for 6 hours

Anyway all I was trying to do was prevent someone having an accident, and all I am getting is flamed and comments implying I have crap equipment and over inflate my tyres.

Some of you know what I did for a living, and I feel that I am probably one of the better "qualified" on here to comment on tyres, car set-up and handling.

Feeling a little unloved here chaps .