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ChrisZang · 12-31-2013, 08:45 AM

are you sure that both the front AND the rear are 45 height?
I would expect the rear to be 5 less
There's also usually a bit of wiggle room in the width of the tire, meaning
if the spec requires a 235/45, then a 245/40 usually fits too

There's a lot of 911 guys who run 19" on the street and 18" on the track and I don't think they have any ventilation issues

Suggestion on DOT legal track tires:
Michelin Sport Cups
Nitto NT-01

12-31-2013, 08:45 AM	#2
ChrisZang Registered User Join Date: Mar 2006 Location: San Carlos, CA 94070 Posts: 1,450	are you sure that both the front AND the rear are 45 height? I would expect the rear to be 5 less There's also usually a bit of wiggle room in the width of the tire, meaning if the spec requires a 235/45, then a 245/40 usually fits too There's a lot of 911 guys who run 19" on the street and 18" on the track and I don't think they have any ventilation issues Suggestion on DOT legal track tires: Michelin Sport Cups Nitto NT-01 __________________ I still wave at Boxsters, but they no longer wave back :-( 2002 Boxster S "Violet" (sold but not forgotten) 2009 Carrera 4S "Kelsey" (current ride) 2015 FIAT 500e "Nikki" my commuter car