An acquaintance told me that in Southern Ireland they are fully implementing EU safety rules. One of which is that ALL tyres have to be the SAME brand. I asked whether he meant same TYPE, but no. Same brand. This cannot be correct, surely?
Edited by Dynamic Dave on 20/03/2008 at 10:38
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EU law says TYPE and this means radial,bias or cross-ply but some people choose to interpret this as make or tread pattern.Tyres on the same axle must be the same-either both radial,both bias or both cross-ply but no restriction on make/tread pattern.
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i think the one brand fits all only applies to F1 cars
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I've had Michelin, Pirelli and other tyre brands on at the same time - my cars have never failed an MOT on the basis of mixed brands..:-)
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Stuartli, but did you have the MOT done in Southern Ireland?
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if its a genuine reason to fail the MOT in southern ireland why dont you drive north and get it tested in Northern ireland
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I can see the logic.
I once replaced a Semperit with a Michelin (same size and type) but the Michelin was 1/2 an inch narrower!
Also at one stage the last company car had two asymmetric tyres on the front, two unidirectional tyres on the rear and a "bog standard" tyre as spare (all same size - I did not get a choice of tyre but what came on the van). Now what would have happened if I'd had a puncture and then needed to brake hard in the wet!
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I once replaced a Semperit with a Michelin (same size and type) but the Michelin was 1/2 an inch narrower! <<
Huh ?
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" if its a genuine reason to fail the MOT in southern ireland why dont you drive north and get it tested in Northern ireland"
For the same reason that you don't get your MoT done in France, where they call it the Control Technique. Imagine presenting it at the PO when you re-tax!
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For the same reason that you don't get your MoT done in France where they call it the Control Technique. Imagine presenting it at the PO when you re-tax
what does it matter where its MOT'd i can drive my car anywhere as long as its got one
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Huh ?
Yes really - the tread width was narrower - same size tyre, I checked - several times!
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Yes, I have seen this, comfort tyres seem to have a narrower tread and ballooning sidewalls, whereas sports tyres have flatter sidewalls and a wider tread with a sharper corner.
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"Also at one stage the last company car had two asymmetric tyres on the front, two unidirectional tyres on the rear and a "bog standard" tyre as spare (all same size - I did not get a choice of tyre but what came on the van). Now what would have happened if I'd had a puncture and then needed to brake hard in the wet!"
Exactly the same as if you had a (perfectly legal) space saver or lightweight spare.
Incidentally, many cars have different sizes front to rear, and a third size in the spare!
DC
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Clearly not something that applies to GE Fleet leased company cars as I get whatever Kwik Fit can offer to them cheapest at the time - hence three different brands on at the moment!
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Tyres on a single axle have to be the same type, e.g. steel belted radial, and size.
Actually tyres of the same type and size can have very different driving characteristics owing to differences in construction and rubber compound. The difference can be great enough to be dangerous. Nevertheless it is permitted.
One of many reasons why a car with a new MoT cannot be guaranteed to be safer than one whose MoT has expired. But of course we all know that don't we?
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I reckon looking at the tyres can be a good indicator for finding a cared for used car:
- different tyre on one corner - something's happened - puncture, or accident damage ?
- cheap brand of tyres - could be skimping on maintenance
- different rate of wear - suspension problem ?
- different tyres on multiple corners - lots of punctures or accident damage ?
- worn tyres on very low mileage car - it's had a hard life
- different tyres front to back - not religeous about car maintenance
- original fit tyres all round, even wear on each axle - ideal
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Yes really - the tread width was narrower - same size tyre, I checked - several times!>> {message you're replying to now made visible}
Sorry, you will have to excuse my disbelief. Tread size is related to width of tyre measurement, is related to wheel size it fits on. Different measurements would cause chaos allowing tyres to be fitted to wheels that are too narrow/wide for them with dangerous results.
Edited by Dynamic Dave on 21/03/2008 at 01:13
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Sorry. Been away from the site.
If you don't believe it measure some tyres - the marked size is the RIM width, NOT the tread width which can vary significantly - on these tyres it was 10%!
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The marked tyre size does not include the RIM width; but the bead to bead tyre measurement in mm for the cross section AFAIK. The tread width is only a part of that, so it can vary.
Had the problem myself in years gone by.
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I am in a position to measure more tyres (than the average person) and there can be some differences on tread width of the same size tyres.
But I have not found any with anywhere near 1/2 inch variation! 2 - 3 mm seems more the order of the day!
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Don't remember the size (it was a standard 1983 1.6 Sierra) and the original Semperits were much wider than the Michelins I had fitted.
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