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Author Another Rubber question
Anty
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Registered: 19th Mar 08
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14th Oct 13 at 23:13   View Garage View User's Profile U2U Member Reply With Quote


i am sure i asked on here before about tyres, but cant find the thread.

im running on 165/70/13 can i see any difference with 175/70/13 tyres, will i need bigger wheels for fuel economy.
Munchie
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15th Oct 13 at 10:03   View User's Profile U2U Member Reply With Quote
This thread should say 'another rubber band question'
Ian
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Registered: 28th Aug 99
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15th Oct 13 at 10:08   View Garage View User's Profile U2U Member Reply With Quote
They are 70% of 10mm larger so 7mm.

That does effectively lengthen your gearing but I wouldn't think you'll notice it.

Additional distance travelled from the larger circumference is probably offset by the frictional loss of the cross section.

[Edited on 15-10-2013 by Ian]
Robin
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15th Oct 13 at 16:22   View Garage View User's Profile U2U Member Reply With Quote
14mm bigger.

Go for a 165/80 13, 594mm over 560mm of the 165/70.

That'll mean 862 revolutions per mile as opposed to 913, 6% less revolutions.
Anty
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14th Nov 13 at 20:57   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Robin
14mm bigger.

Go for a 165/80 13, 594mm over 560mm of the 165/70.

That'll mean 862 revolutions per mile as opposed to 913, 6% less revolutions.


whats that in English..
stan_the_man
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16th Nov 13 at 15:06   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Anty


i am sure i asked on here before about tyres, but cant find the thread.

im running on 165/70/13 can i see any difference with 175/70/13 tyres, will i need bigger wheels for fuel economy.



What car do you have if you are contemplating changing 13" tyre sizes for fuel economy?
Anty
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16th Nov 13 at 18:55   View Garage View User's Profile U2U Member Reply With Quote
Vauxhall corsa B looks quite low atm

 
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