Tire Psi

[chunderboy]

So, going to boston today, and was just wondering what P.S.I should the tires be inflated to, to ensure good mpg.

Dunlops with 17k or so on them. Currently they are running at like 38 or so.

Thanks boys

 

[Mark86]

Drew, Toyota suggests that you keep the tires at 32 psi. I used to keep mine at 35 for better wear but the ride was too bouncy. Now I leave mine at 32 psi and everything is good. I think anywhere from 32-35 psi is good.

 

[chunderboy]

Yea, i saw that, but guys are usually running high 30's or even 40's.

 

[AlexJet]

I have 265/70R17 Revos. I was running 32psi on them, but then decide to go with 37psi for better mileage and tread wear. It looks like I'm driving wooden wheels. So I think I'll go down to 35psi today. I don't think it's a comfortable ride with 38-40psi. I agree with Mark, 32-35psi should be perfect match.

 

[chunderboy]

I guess i'll stick with 35's all around

 

[greasefingers]

Since it's safe to run them up to 51 psi (as stated on the rubber), I

 

[JungleJim]

Since it's safe to run them up to 51 psi (as stated on the rubber), I

 

[tkr128]

Mine have always been around 32-34 psi.

 

[dingo]

I have the stock Duelers H/T's. I usually have all four at about 33 or 34 psi (always measured at cold pressure). I also carry a portable air compressor in my truck just in case I need to air up in the middle of nowhere (or for after airing down when I have to go offroad for some reason). I also keep the spare at around 37 just in case over time the pressure softens out while it hangs underneath.

My next set of tires will definitely be the REVO's.

 

[BenSD]

I have my dunlops at 42PSI. I have seen an increase in MPG vs. 35PSI.

 

[RickyCRX]

Safe? The max inflation pressure on a tire relates only to the tire itself.

Toyota engineers came up with the 32 psi. That is the pressure that they feel is best for handling, safety, perfomance, etc.. If you don't trust the Toyota engineers who designed the 4Runner, why would you feel safe driving it?

Stick with what the Toyota engineers recommend.

:rolleye2: When I had the stock Dueler's at 32psi, the 4Runner would wallow and the tires would howl any time I made quick turns. After bumping them up to 38-40psi, they no longer squeel/howl around underpass turnarounds and I can actually take better advantage of the wonderful Sport suspension on this vehicle.

The more stiff the sidewalls are, the quicker the vehicle will respond to quick transitions. This makes for a much safer drive.

Ricky

 

[RickGKY]

TireRack recommends 44 PSI . They are pretty much the tire experts . When I checked the specs on Dunlop GroundTreks at various sites they all recommended 44 psi . Underinflation to Ford's recommended psi was the major cause of Firestone blowouts on Explorers .

 

[jdkilroy]

I run E-rated tires for a safety margin when towing so the max cold inflation pressure for tire is 80 psi.

I would not exceed what your particular tire is rated for (max cold pressure); that said, I normally keep mine inflated to 42 lbs.

Handling is a bit more responsive and mileage improves.

 

[MICA4R]

38psi throughout

 

[BCfish]

Wow another ghost er post from the past..The last post was 2005??

 

[AlexJet]

Do not overinflate the tires. You may gain some fuel economy and easy rolling, but you'll kill your tires very fast.
Far back I use to run 45psi on my 33s because it was good roll and I gain 1 l/100km fuel economy, 20'000km later tires were worn unevenly, so they couldn't run smooth anymore. Cost me new tires. Since then I check every tire for even wear to set my pressure. Run 34psi on front and 33psi on the rear with my 35s. Nearly 40'000km and they roll nice and smooth like new.

 

[MikeInNH]

Adding a few lbs over the recommended psi is fine....10lbs over is NOT.

I usually run about 35psi all around and I get about 50k+ miles on my tires.