Tire PSI with 20" wheels
04-07-09, 08:40 PM
Lexus Fanatic
Join Date: Sep 2007
Location: Waiting for next track day
Posts: 22,608
I usually run 42 in the summer in AZ because we get the 120 deg air temps, so the road surface could be 140 +
04-07-09, 09:50 PM
Racer
Join Date: Jun 2003
Location: MD
Posts: 1,752
you guys run a lot higher than i expected.. i better check mine too..
04-08-09, 05:19 AM
Lexus Test Driver
Join Date: Oct 2005
Location: MA
Posts: 8,698
The recommanded PSI for a IS-F factory 255/35-19 is 38 PSI.
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20 ,
245 ,
30 ,
32 ,
35 ,
good ,
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psi ,
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