ECR Posted August 22, 2011 Share Posted August 22, 2011 Anyone tell me the O/D of the 205/60R13 AO21R Yokohama ? Link to comment Share on other sites More sharing options...
Claire Voyant Posted August 22, 2011 Share Posted August 22, 2011 576mm? according to a tyre calculator Same as any other 205/60/R13? Geo Polley says 558mm Edited by - Rollbar on 22 Aug 2011 14:18:27 Link to comment Share on other sites More sharing options...
Drumster Posted August 22, 2011 Share Posted August 22, 2011 Try this Roger, 205mm x 60% x 2 x 13" x 25.4mm = 576.2mm Well, at least that's the way I normally approximate tyre diameters 😬 Link to comment Share on other sites More sharing options...
BBL Posted August 22, 2011 Share Posted August 22, 2011 I believe Chris meant: 205mm x 60% x 2 + 13" x 25.4mm = 576.2mm 205 is tread width in mm 60 is ratio of sidewall height to tread width (need 2x for diameter; top & bottom) 13 is wheel diameter in inches (need 25.4x to convert to mm) Link to comment Share on other sites More sharing options...
Area Representative Paul Richards Posted August 22, 2011 Area Representative Share Posted August 22, 2011 Geo Polley says 558mm He says 558mm for 185/60R13. For 205/60R13 it's 578mm. Link to comment Share on other sites More sharing options...
ECR Posted August 22, 2011 Author Share Posted August 22, 2011 Thanks guys Link to comment Share on other sites More sharing options...
Drumster Posted August 22, 2011 Share Posted August 22, 2011 BBL, I wondered why I always ended up with tractor tyres Link to comment Share on other sites More sharing options...
ECR Posted August 22, 2011 Author Share Posted August 22, 2011 Not going to fit under my CSR wings I think ☹️ Link to comment Share on other sites More sharing options...
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