 | Home > Puma (Tdci) > New Tyres now DSC issues |
 
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| Balvaig Member Since: 19 Feb 2016 Location: Fife Posts: 719   
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I was always told that new tyres needed about 500 miles to bed in. It may be that the rubber is settling in , hence the DSC coming on.
My experience was similar from new, with the DSC activating quite often, but it soon settled down. Hopefully nothing more than this. |
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16th Dec 2021 12:06pm |
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| jpboost Member Since: 13 Apr 2021 Location: Gatwick Posts: 374  
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Any new tyre tends to be a bit 'slippery' for the first few miles as they will have a coating of dirt/grease/other chemicals that they've picked up in the last stags of manufacture and in shipping/transit. But this goes away fairly quickly.
Do you run a spare wheel cover? I would think that the issue is more likely to be your spare. A spare wheel that's been outside and on the back of a defender for many years will likely have a reasonable amount of UV degradation, and very possibly quite a thick 'coating' of grease, cleaning products, tyre shine etc etc that it's been subjected to over the years. Personally I'd run both your nice new rear tyres, and leave the spare where it was. It'll be fine to get you home if needed, but it'll never be the same as the new ones. |
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16th Dec 2021 12:07pm |
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| Bluest Member Since: 23 Apr 2016 Location: Lancashire Posts: 3997 
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Do the basics first, check the pressures are right, all the wheel nuts are tight. Have a look to see if any of the ABS sensors have been disturbed by pulling the wheels on and off etc. 2007 110 TDCi Station Wagon XS
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16th Dec 2021 5:37pm |
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| Leamreject Member Since: 19 Dec 2020 Location: Middle Earth - Leamington Spa Posts: 955  
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If your running new tyres with an ecu enhancement, this wouldn't surprise me if the roads are wet or recently gritted.
Tyres can take up to 100 miles of road use to scrub in. I have all of our blood bike new tyres scrubbed in before they go back into active duty, riding a bike with new tyres you certainly know the difference…. Ride like you stole it!! If I’m not on a bike it’s because only a 4x4 will do… 2011 2.4 Puma 90 HT |
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16th Dec 2021 6:47pm |
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| Rosco Member Since: 03 Dec 2010 Location: Burntwood Posts: 1805 
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Thanks for the replies all.
Bluest, wheel nuts was first thing I checked, even broke out my new torque wrench. I'll run them for another few hundred miles see if it improves, but since posting it is happening less and less 2007 - Stornoway Grey 90 XS SW - Gone 2002 - Black Discovery II - Gone 2014 - Montalcino Red 110 XS SW |
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17th Dec 2021 11:59am |
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| Matt110 Member Since: 29 Jun 2014 Location: UK Posts: 673
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What it sounds like is you've now got 2 X new tyres, 1 X old but unused and hardened tyre, and one old used worn tyre...
Far more likely than actual slip given what you're describing is the tolerance built into the DSC tune is being exceeded from the point of view of where it will begin to intervene in a normal high mu driving cindition at speed. The system measures wheel rotation. You've 3 tyres at "new" rolling radius, and another one at worn. Add in the combined effect of it actually being a bit greasy out there, the tyre on the front being harder and having a lower longitudinal mu value than the rears and you're throwing in quite a few factors which combine to create an impression of the start of a "slip" event. There's nothing wrong with it other than the annoyance. If it irritates you, switch back to the more worn tyre so you've got a consistent rolling radius on each axle, and only swap tyres in pairs. |
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17th Dec 2021 12:59pm |
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| lonewolf Member Since: 23 Oct 2013 Location: North East England Posts: 206 
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Remember that tyres have a useful life whether used or not. I changed my tyres which had lots of tread left but had ‘hardened’ with age becoming slippy in damp conditions on bends etc.
The spare had never been used but was past its ‘used by date’ to coin a phrase and also I was changing to a different brand so I changed all five. Best to be safe than sorry if the tyres are aged, get rid. |
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20th Dec 2021 10:42am |
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| PeeWee Member Since: 13 Apr 2017 Location: Somersetty Posts: 17  
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A thought on these Continentals - they are not directional (out of the factory) but with use they wear in a directional manner. If they are changed side-to-side it sounds as if the wheel bearings are on the way out!. Continental are aware of this and don't seem bothered!
I was using Contis as summer tyres and BFGs as winter but didn't realise that I needed to label the Contis. |
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18th Jan 2022 9:21pm |
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