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my 2 cents
tire heights for 17 and 18 (overall diameter including tire)
should be negligible unless you stray from recommended
Porsche sizes for each respective rim diameter
If there is a difference..then the tire that is smaller in diameter
should give an advantage at the start of a race.
lower profile tire equals less squirming when cornering
therefore more precise steering, less sidewall flex, less heat generated
taller profile tire equals more flex in sidewall ...which generates heat
but less precise steering
16's are good for a plush ride...probably the best for winter driving
17's are good at filtering out most road imperfections
18's let you know of every imperfection in the road
19's make you feel every imperfection in the road
my 4 cents
Cheers
Chris
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Living one calculated risk @ a time
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