Sorry, but for the totally ignorant among us, what is tramlining?
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Tramlining is where the wheels try to follow any imperfections in the road and not where you try and point them. Usually in ruts left by lorries or seams in the tarmac. You can feel it as slight tugging left or right on the steering wheel, usually as you try to come out of ruts or across seams. Sometimes it is felt as extra effort needed on the wheel to get out of the ruts with a sudeen release as you leave them. On badly tramlining cars its a pitched battle and tug of war with the steering wheel.
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Tramlining is where the wheels try to follow any imperfections in the road and not where you try and point them.
As you might have guessed the name came from the past when the major risks in town to narrow tyred slow cars was ye old tram lines. It continued to be a risk for some years until the roads were resurfaced as I was only too aware riding a push bike.
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Ahh, right. Thanks very much.
Now, for my next daft question, what kind of wheels / tyres are inclined to tramline? I can see that narrow tyres might be inclined to do it, but the impression that I'm getting on this thread is that larger diameter wheels would also be more at risk. Have I got this right? And if so, why is it?
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Since we lost the tramlines, is now the wide low profile tyres on fairly stiff suspensions that do it. There is considerably less flexibility in low prifile tyres, and being wide have larger footprint. Hence the road can exercise more control over the wheels through the tyre.
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