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Spare tire dilemma - advice sought 850 1994

posted by lucast on Fri May 16 19:12 CST 2008
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last visit: Fri Aug 29 04:56 CST 2008

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I have 17x7.5" Amalthea rims installed on my 850 T-5 using Bridgestone Potenza Adrenalin 215/45/R17 tyres. The original factory wheels that I had are 16" Columba rims shorn with Goodyear Eagle F1 GSD-2 205/50/R16. The spare is a Columba with the same tire that's not ever been used.

My question is: Are these wheels so different in size that I should be overly worried about driveability/safety/bad mechanical wear in the event that the spare has to deployed?

As far as I have been able to ascertain via several online tire size calculators, a new 205/50/R16 tyre is approx 0.5" inch smaller in diameter and 1.7" inch in circumference than a new 215/45/R17 - I presume after a while, the used 17" tyres will become fairly similar in diameter to the new 16" spare! Going to 205/55/16 will make the spare about 0.3" comparatively larger in diameter.

I am trying to save some money by not picking up another Volvo 17" rim and fitting a 215/45/17 to it.

Some food for thought from the Tirerack (albeit for 4WDs):

http://www.tirerack.com/tires-techpage-1/18.shtml

Appreciate any advice guys!

Lucast

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Spare tire dilemma - advice sought [850][1994]
posted by lucast on Fri May 16 19:12 CST 2008 >

Spare tire dilemma - advice sought [850][1994]
posted by TimeToBakeTheDonuts on Tue May 20 23:41 CST 2008 > V

Spare tire dilemma - advice sought [850][1994]
posted by james_a_sousa on Tue May 20 22:23 CST 2008 > V

Spare tire dilemma - advice sought [850][1994]
posted by KlausC on Sun May 18 15:46 CST 2008 > V

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