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| Tyre circumference https://ausmini.com/forums/viewtopic.php?f=2&t=15707 |
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| Author: | Mokesta [ Tue Jan 31, 2006 1:41 pm ] |
| Post subject: | Tyre circumference |
After reading that minis handle better with 10" wheels than with 12", I decided to measure the circumference of the stock standard set-ups. My Morris has 145 SR 10 tyres. These measure 153cm circumference with fairly complete tread. (so 653.6 revolutions per km and a radius of 24.3 cm) The Rover tyres are 145 / 70 / 12 and these have a circumference of 159 cm. (so 628.9 revs per km and a radius of 25.3 cm) So the car is only raised by 1 cm by changing the wheels. They feel about the same weight, but I didn't measure them and they've got the same tread width. They would have a bit more rotating inertia but not much. Therefore it must be the sidewall height and associated flex that makes the difference in handling?? Anyone know (maybe from a catalogue) what the circumference of typical 165/60 or 175/50 aspect tyres have? Maybe these are taller again? M |
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