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Tire Size & Width Chart

    Find your sidewall width or size in left column. Move right to find your Aspect Ratio column (AR, may be on the sidewall or mfg.’s specs). Number in the box + your rim diameter = tire’s outside diameter (height).

Size,
MM

Width,
Inches

Sidewall height (from rim bead seat to top of tread) × 2.

35

AR

40

AR

45

AR

50

AR

55

AR

60

AR

65

AR

70

AR

75

AR

180 mm

7.09” 

4.96” 

5.67” 

6.38” 

7.09” 

7.80” 

8.51” 

9.22” 

9.93” 

10.64” 

185 mm

7.28” 

5.10” 

5.82” 

6.55” 

7.28” 

8.01” 

8.74” 

9.46” 

10.19” 

10.92” 

190 mm

7.48” 

5.24” 

5.98” 

6.73” 

7.48” 

8.23” 

8.98” 

9.22” 

10.47” 

11.22” 

195 mm

7.68” 

5.38” 

6.14” 

6.91” 

7.68” 

8.45” 

9.22” 

9.98” 

10.75” 

11.52” 

200 mm

7.87” 

5.51” 

6.30” 

7.08” 

7.87” 

8.66” 

9.44” 

10.23” 

11.02” 

11.81” 

205 mm

8.07” 

5.65” 

6.46” 

7.26” 

8.07” 

8.88” 

9.68” 

9.22” 

11.30” 

12.11” 

210 mm

8.27” 

5.79” 

6.62” 

7.44” 

8.27” 

9.10” 

9.92” 

10.75” 

11.58” 

12.41” 

215 mm

8.46”&n

225 mm

8.86” 

6.20” 

7.09” 

7.97” 

8.86” 

9.75” 

10.63” 

11.52” 

12.40” 

13.29” 

230 mm

9.06” 

6.34” 

7.25” 

8.15” 

9.06” 

9.97” 

10.87” 

11.78” 

12.68” 

13.59” 

235 mm

9.25” 

6.48” 

7.40” 

8.33” 

9.25” 

10.18” 

11.10” 

12.03” 

12.95” 

13.88” 

240 mm

9.45” 

6.61” 

7.56” 

8.50” 

9.45” 

10.40” 

11.34” 

12.29” 

13.23” 

14.17” 

245 mm

9.65” 

6.76” 

7.72” 

8.69” 

9.65” 

10.62” 

11.58” 

12.55” 

13.51” 

14.48” 

250 mm

9.84” 

6.89” 

7.87” 

8.86” 

9.84” 

10.82” 

11.81” 

12.79” 

13.78” 

14.76” 

255 mm

10.04” 

7.03” 

8.03” 

9.04” 

10.04” 

11.04” 

12.05” 

13.05” 

14.06” 

15.06” 

260 mm

10.24” 

7.17” 

8.19” 

9.22” 

10.24” 

11.26” 

12.29” 

13.31” 

14.34” 

15.36” 

265 mm

10.43” 

7.30” 

8.34” 

9.39” 

10.43” 

11.47” 

12.52” 

13.56” 

14.60” 

15.65” 

270 mm

10.63” 

7.44” 

8.50” 

9.57” 

10.63” 

11.69” 

12.76” 

13.82” 

14. 12.12” 

13.22” 

14.33” 

15.43” 

16.53” 

285 mm

11.22” 

7.85” 

8.98” 

10.10” 

11.22” 

12.34” 

13.46” 

14.59” 

15.71” 

16.83” 

290 mm

11.42” 

7.99” 

9.14” 

10.28” 

11.42” 

12.56” 

13.70” 

14.85” 

15.99” 

17.13” 

295 mm

11.61” 

8.13” 

9.29” 

10.45” 

11.61” 

12.77” 

13.93” 

15.09” 

16.25” 

17.41” 

300 mm

11.81” 

8.27” 

9.45” 

10.63” 

11.81” 

12.99” 

14.17” 

15.35” 

16.53” 

17.72” 

305 mm

12.01” 

8.41” 

9.61” 

10.81” 

12.01” 

13.21” 

14.41” 

15.61” 

16.81” 

18.02” 

310 mm

12.20” 

8.54” 

9.76” 

10.98” 

12.20” 

13.42” 

14.64” 

15.86” 

17.08” 

18.30” 

315 mm

12.40” 

8.68” 

9.92” 

11.16” 

12.40” 

13.64” 

14.88” 

13.18” 

17.36” 

18.60” 

320 mm

12.60” 

8.82” 

10.08” 

11.34” 

12.60” 

13.86” 

15.12” 

13.39” 

17.64” 

18.90” 

325 mm

12.80” 

8.96” 

10.24” 

11.52” 

12.80” 

14.08” 

15.36” 

13.60” 

17.92” 

19.20” 

330 mm

12.99” 

9.09” 

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"Harley-Davidson Flatheads", by Jerry H. Hatfield.
"Harley-Davidson Panheads", by Greg Field.
"Harley-Davidson: The American Motorcycle", by Allan Girdler.
"Harley-Davidson Knuckleheads", by Greg Field.
"Harley-Davidson Classics", by Jerry H. Hatfield.
"The Milwaukee Marvel", by Harry V. Sucher.
"The Harley-Davidson and Indian Wars", by Allan Girdler.
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thumb.jpg" alt=""The Linkert Book""" BORDER=0>
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"45 Performance"
"British Transmission Ideas for the Harley-Davidson 45"
"The Big Book"
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