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Tire Sizing Guide

For 16” British Tire Sizes

• All British tire sizes are based on British Standard BS AU 50, 1, 2.1, 1991 (British Standard for Tyres and Wheels)
• Range of tire widths are shown in the standard based on mounting on different width rims.

British Size	Width (inches)	Diameter (inches)	Equivalent Metric Size	Closest Metric Size
				Designation	Width (inches)	Diameter (inches)
6.00 – 16	6.7 to 7.1	28.9	175/95R16	205/80R16	8.1	28.9
				235/70R16	9.3	29.0
6.50 – 16	6.9 to 7.3	29.5	180/95R16	225/75R16	8.9	29.3
				245/70R16	9.6	29.5
7.00 – 16	7.8 to 8.3	30.6	205/90R16	215/85R16	8.5	30.4
				245/75R16	9.6	30.5
7.50 – 16	8.1 to 8.5	31.7	210/95R16	235/85R16	9.3	31.7
				265/75R16	10.4	31.6
8.25 – 16	9.1	33.9	230/100R16	255/85R16	10.0	33.0
				285/75R16	11.2	32.8
9.00 – 16	9.9	35.4	250/100R16	315/75/16	12.4	34.6

Metric system is based on:

"Width (millimeters)" / "Aspect Ratio (percent)"  "R for radial" "Rim Size (inches)"

Diameter (inches) = width / 25.4 * 2 * aspect ratio / 100 + rim size
i.e. for 245/75R16
245 / 25.4 * 2 * 75 / 100 + 16 = 30.47"

Width (inches) = width / 25.46
i.e. for 245/75R16
245 / 25.4 = 9.65"