tyre sizes - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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Andy_sxi

Member

Registered: 28th Aug 04
Location: West Midlands Drives: 1.2 16v SXi
User status: Offline

7th Jul 06 at 11:20

Hi I have bought some alloy wheels that were from from a meriva. The tyres are 185/60/15 compared to my old tyres which were 165/65/14. I have checked on http://www.miata.net/garage/tirecalc.html and it says 5.8% too slow so 60=63.5mph. But on this website http://www.dakota-truck.net/CGI-BIN/TireCalc.cgi it says I would be travelling slower so 60 mph (96.54 kph) =56.73 mph (91.27 kph) The more I read about it the more confusing, surely the speedo must now seem faster with bigger wheels??

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