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Discussion Starter #1
Just a quick question for the Ti owners out there.

Is the best size for tyres on this rim 215/45/17 or 225/45/17?

Cheers
 

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Either ... not much difference (although I've got 225s ...)
 

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215/45 is the recommended size.
True ... but the rolling radius is very little difference to 225s ... and 225s are a much more common tyre size so it's easier (and usually cheaper) to get tyres ...
 

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Discussion Starter #14
147 Ti Owners :p (if there is a 147 Ti??? :lol:)
There is a 147 Ti

Does anybody have the original tyres still on their version? This would end all arguements. I thought it was the 215/45 but most people seem to have the 225's. Whats the difference anyway?
 

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The rolling radius is the same. Only difference is the width isn't it.

Thicked tyres = more grip.

:)
Nope the "45" is not the height of the tyre in absolute terms, it is a percentange of the width of the tyre ...
 

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There is but it doesn't mention the 147 in the opening post. :p
But if you use your eye's you will notice that the OPs car is a 147 ... :p (we could keep doing this all day methinks :lol:)
 

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Does anybody have the original tyres still on their version? This would end all arguements. I thought it was the 215/45 but most people seem to have the 225's. Whats the difference anyway?
215/45 ZR17 91Y is specified in the owner's manual. 225 is not.


215 or 225 is the width of the tyre in millimetres.
 

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215 or 225 is the width of the tyre in millimetres.
+ the the rolling radius is slightly larger (millimetres) for 225 ... David C states that 225's are ok and he knows more than Alfa about Alfa's ... ;)
 

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225/45R17 are very close in dia to the std 205/55R16, so they are fine.
They are also a stronger tyre than the 215/45R17, so no issues there.
 
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