sco

Hi all, I was after a common-sense answer relating to tire pressure if someone can help me out, as I may have no common-sense myself (What can I say, I'm a computer nerd, so mechanics isn't native to me! )

Question 1) I have 255/35/18 Bridgestone GIII Rears, and 225/40/18 Bridgestone GIII Fronts. What pressure should I be inflating them to for daily driving? ?

The spec sheet on my car indicates 31-32 psi for 16", or 28-29 psi for 17", so based on the data alone you COULD in theory guess that pressure for 18" would be less - but we all know theory isn't necessarily good in practice...

Question 2) Prior to looking up this tire pressure data on my car, I attempted to inflate my tires to 32 psi. Problem with this was, the tires would bleed-off pressure until they reached 26-29 psi (I would inflate the tires to 32 psi, leave them for a minute, check the tire pressure again, and find Left/Rear = 26 psi, Left/Front 29 psi, Right/Front 27 psi, Right/Rear 28 psi). Would this indicate my tire valves are potentially stuffed, or is it possible that my valves are bleeding-off to this pressure for a reason (I can't imagine the valves are smart enough to be pressure-rated, but I'm just throwing this out there to clear all the "what-ifs" running around in my brain).

As extra information (useful or otherwise) I got the car from japan about a year and a half ago, have changed 2 x front tires only, not changed/replaced any valves...

Thanks for any answers/comments.
Sco

yuichiror

iTrader: (1)

I'm no tire expert, another computer geek, but here in the US, we always change the valve stems when we get new tires. I would think that your valves are "stuffed" and need to be replaced. And yeah, I would think around 32psi would be fine. Anyone else got some answers?

sco

Hi yuichiror, thanks for getting back to me so fast with some info, I'll check out those valve stems...

rynberg

Yes, just run 31-32 psi. Your valves are "stuffed". Anymore "keen" Australian slang you want to teach us...

sco

Ha ha rynberg, I keep forgetting this is an 'international/us' website, so I tend to let slip with the aussie slang.

I would love to teach you fellas how to speak the king's english, but fair dinkum, it's time for me to roll out the swag and tuck-in before the mozzies start biting (This cryptic sentence should take you a while to figure out )

Thanks for the comments guys!

yuichiror

iTrader: (1)

Wow and I thought Kiwi's talked funny (waiting for Weebix's response...).