Part 95 - Know Tire Sidewall Markings... (",)

Tire Sidewall Markings

Denotes The Type of Construction	On the illustration above the Markings 150/70 ZR 18 MACADAM 90X means:- 150 = Nominal section width of the tyre in millimetres. 70 = The aspect ratio of the tyre; this means the height of the tyre's cross section expressed as a percentage of its width. Z = Speed catagory indicating tyre is suitable for speeds over 240 km/h (150 mph). R = Radial construction. 18 = Nominal diameter of the rim to which the tyre should be fitted (shown in inches). MACADAM 90X = Tread pattern, in this case a radial rear tyre.			Country of Manufacture
Tyre construction details (not required in UK)				Tyre size designation incorporating speed symbol
North American Tyre Identifcation Number with North American Dept of Transport Compliance Symbol	Manufacturers Brand Name			Load and pressure marking requirement (not required in UK)
Load range USA (not required in UK)	Tyre Type Tyre construction details (not required in UK)			Commercial name for identity code

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