986 Forum - for Porsche Boxster & Cayman Owners

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-   -   another tire pressure question (http://986forum.com/forums/boxster-general-discussions/13574-another-tire-pressure-question.html)

Stunin_Stud 10-07-2007 04:52 PM

another tire pressure question
I know theres alot of debate on this so I think if I can collaborate with you all I can find the best solution.

I have the factory 18inch wheels on sumi htrzII tires( front: 225/40/18, back 265/35/18) and I live in sunny california. I want best fuel economy,ride, and handling. So what would you recommend for the front and rear tire pressure?

NickCats 10-08-2007 09:44 AM


Factory recommends 29 psi front / 36 psi rear. This is probably optimum for ride and handling...

Regarding fuel economy, increasing tire pressure will increase fuel economy but will lessen ride and handling characteristics.

Here's a good thread regarding such :



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