tyre size choices for my rims

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gchristofi
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Post Sun Aug 08, 2010 1:06 am

I've got what I think are 7 J rims with 205 55 R15 wheels at the moment. I need to change tyres but some of the tyres I'm considering don't come in that size i.e. toyo R888.

I'm not that well up on how tyre sizing works so what tyre size choices do I have with my existing rims?

(I might go with the toyo t1-r which seem to be well liked and do come in 205 55 15)
djs325
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Post Sun Aug 08, 2010 2:18 am

205/50 R15. Not as tall in the profile (less tyre wobble) and you'll reduce the diff ratio slightly (pick up a couple of rpm).
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gchristofi
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Post Sun Aug 08, 2010 10:44 pm

Thanks. What does the 50 vs. 55 actually mean. I know it relates to tyrewall height but is it a measurement or ratio or something??
Theo
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Post Sun Aug 08, 2010 11:12 pm

It's the tyre wall height expressed as a percentage of the tyre width.
Theo
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Post Sun Aug 08, 2010 11:14 pm

Oh, and I rekon these tyres might be worth a go - https://ssl.delti.com/cgi-bin/rshop.pl? ... sowigan=So
Rav335uk
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Post Sun Aug 08, 2010 11:21 pm

This will help you working out the rolling radius on your wheels too.

http://www.willtheyfit.com/
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gchristofi
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Post Mon Aug 09, 2010 7:43 pm

guys, thaks for your help. Those Federals do look good at that price. Anyone with 1st hand experience?