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					Originally Posted by patrickt  Morris motivated me to go down to the garage and check my filler hole.  If you're wondering what the little shiny tag says it's 46/13, which is my ratio.  | 
	
 That's an imperial size. I try to find that spanner ever since... ;-)
Thanks guys, 
for a very informative thread! 
I take Morris' input about "then they are not driving fast". And instead of upgrading I drive slower :-)