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Discussion Starter · #1 ·
I've got a novice question, but can't seem to get a definitive answer on google. My 2010 Gallardo Spyder LP560-4 has factory tires on the front, Pirelli PZero Nero GT 235/35ZR19. The manual suggests 35psi on cold tires.

My rears have been modified to 305/25ZR20 (factory was 295/30ZR19 with a recommended 32psi). So, trying to determine the best psi for the 20" rears. This is simply for neighborhood driving, not on the track. Thanks everyone!!
 
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