givemethebighammer
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| posted on 22/2/05 at 08:20 PM |
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Red and Yellow spots on new tyres
Just had my new Yoko 48Rs delivered (shame the weather is crap, I won't be using them for a while yet !)
They have a red and a yellow spot on the sidewalls. Are these significant at all ?
Only I will be taking them to my usual tyre fitter to put on my rims sometime in the next few weeks.
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RoadkillUK
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| posted on 22/2/05 at 08:25 PM |
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I knew I'd seen it somewhere, Rob Lane's website. I hope he doesn't mind me posting this here.
Important info on tyre balancing courtesy of Yokohama Tyres
To facilitate proper balancing, Yokohama places red and yellow marks on the sidewalls of its tires to enable the best possible match-mounting of the
tire/wheel assembly. There are two methods of match-mounting Yokohama tires to wheel assemblies using these red or yellow marks:
Weight (yellow mark)
Uniformity (red mark)
Weight Method
When performing weight match-mounting, the yellow mark on the tire, indicating the point of lightest weight, should be aligned with the valve stem on
the wheel assembly, which represents the heaviest weight point of the wheel assembly. After match-mounting by either of the above methods, the
tire/wheel assembly can be balanced.
Uniformity Method
When performing uniformity match-mounting, the red mark on the tire, indicating the point of maximum radial force variation, should be aligned with
the wheel assembly's point of minimum radial run-out, which is generally indicated by a colored dot or a notch somewhere on the wheel assembly
(consult manufacturer for details). Radial force variation is the fluctuation in the force that appears in the rotating axis of a tire when a specific
load is applied and the tire rotated at a specific speed. It is necessary to minimize radial force variation to ensure trouble-free installation and
operation. Not all wheel assemblies indicate the point of minimum radial run-out, rendering uniformity match-mounting sometimes impossible. If the
point of minimum radial run-out is not indicated on a wheel assembly, the weight method of match-mounting should be used instead.
Rob Lane's Website
Roadkill - Lee
www.bradford7.co.uk
Latest Picture (14 Sept 2014)
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givemethebighammer
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| posted on 22/2/05 at 08:28 PM |
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thanks I knew they were there for a reason
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