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6th February 2017, 02:55 | #1 |
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Tyre protector question
Just been reading on the forums about Tyre protector fitted to front springs. Is this year related as I have 1999 v6 model. Looks like vehicle's after 2004 are affected. Cheers
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6th February 2017, 06:53 | #2 |
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It cost me a tyre on my 2000-plate V6 so it's worth thinking about fitting them. There's a bit of an ongoing debate as to whether or not the fixings are actually up to the job, but that's another story.
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6th February 2017, 07:36 | #3 |
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Every little helps, so I believe they are worth fitting - cheap and easy enough to do.
As regards how good they are; on my car which was part of the recall (X reg) three front spring breakages which were all contained, Mrs Noc's 75; one breakage and spring through the tyre, the new aquisition; one breakage spring hit tyre but wheel swapped for a space saver to get it up on the drive, so tyre saved. Needless to say, all of the fleet are now equipped with spring protectors. |
6th February 2017, 12:32 | #4 |
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Here's a comment I kept from a member who was involved with the development of these gizmos.
I spent a lot of time driving over kerbs and pot holes with cut springs developing the tyre protectors. I agree they do not catch everything but they do stop most. We changed the spring manufacturer in the end to cure this problem. It's nearly impossible to design and test a product that would catch everything with the package constraints that we had. I cannot remember exactly when, but the spring supplier changed mid/late 2002 so later cars should not suffer from the spring break problem as much. You can never eliminate spring breakage completely as it is a high stress component and a small stone chip will cause a stress point which could fail eventually. Spring fracture happens to every car make, old and new. It's also more prevalent during the winter months, when low temperature embrittlement plays a part. It's initiated by corrosion in the main. This is my copy of a graph published by the AA a few years ago. TC Last edited by T-Cut; 6th February 2017 at 12:38.. |
6th February 2017, 16:03 | #5 | |
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Quote:
More likely however - springs develop small macro fractures due to exposure/corrosion and stressing; in cheaper spec. heat treated steels this manifests as minute surface flaking and 'nicks/pockets'. Moisture abounds and justs help the general corrosion along but in cold weather, particularly when the ambient temperature reaches 3C or dives lower the trapped moisture freezes and turns into ice. The springs meanwhile continue to stress and undergo torsion and all the tiny pockets of trapped ice act like mini wedges - yup, you've guessed it, the micro cracks get bigger and bigger causing larger cracks etc. etc. Ever increasing changes in cross-section of the steel thus brings higher and higher stresses resulting in the eventual classic 45deg. shear fracture to the whole spring cross section. Better, controlled quality spring steel (and better coating of the springs) will slow down the process. |
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8th February 2017, 05:03 | #6 | ||||
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Quote:
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TC Last edited by T-Cut; 9th February 2017 at 09:44.. Reason: Consecutive posts, please use the edit or multi-quote options ;-) |
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8th February 2017, 20:49 | #7 |
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If you run a ZT on factory spec Continentals (over £150 a corner) and they save your tyre, I would say that they represent good value, However, if you're running a 75 on 15" chinese death rings, I would say, have a word with yourself, as they are the only thing that keeps the car on the road.
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8th February 2017, 20:52 | #8 |
I really should get out more.......
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See this is the perfect case for a USED TYRE!! (see used tyre thread) *shock* *gasp*
If you have matching expensive tyres, and something bad happens, you can get an EXACT match to the depth should you so desire, thus putting your car back to the status quo. If I had 4 half used Contis, and one got shredded by a spring, Id never replace just the one with a brand new one, so the other three wear out, and the remaining one is still 50%. ))) |
9th February 2017, 00:55 | #9 |
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Link please ?
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9th February 2017, 06:54 | #10 |
I really should get out more.......
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