Tires and pressure Options

[lsintampa]

Here goes, maybe I'm not understanding something and there is opportunity for me to learn.

Firstly, what happened to the "tire calculator"?

Now onto the discussion. Porsche 914's for the most part call for tire pressures to be about 23PSI front and 26PSI rear. I may be off some, but for "most" 914's I think those numbers to be "horseshoe" close enough.

BUT, wouldn't one think that the PSI for the car is based on the tire size that came on the car?

IDK, but I would put some big bucks on the fact that most of us are NOT running on stock wheels / tire combination.

So I wonder for my setup - I'm running Yoko Avid envigor's 195/65/15's on 15X6 cookie cutters - what tire pressure should I be using?

It's just hard for me to understand the relationship between the car / tire size / and tire pressure. IE, if I put that same tire on a different car - would that car's recommended pressure be different?

Enlighten me please.

Thanks,

Len

PS - I wish you all a joyous holiday season and may we all enjoy a healthy new year!


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[michael7810]

Sorry for the highjack...but just how does one tell what is best for a given setup? For normal street driving which is what I do on my mostly stock 914/4, I've tried various pressures from OEM (26/29) to 32/32 and the only difference I notice is in the harshness of the ride. I don't drive enough to see abnormal tire wear. I recently did a DE and the instructor recommended staying with the OEM pressure (26/29 cold) to get "mid-30 PSI" when warmed up.