prwdmd

I own a GS450h and the sticker on the door sill recommends 35 psi all the way around. I find 35 to be a little on the high side and will frequently lower to 33 psi which seems to give me a more planted feel and more stability in the steering. I'm assuming the higher than usual recommended pressure on the hybrid is to squeeze out a couple extra mpg's for their advertised specs. What tire pressures are you guys running on your GS and what are the recommended pressures on the regular GS350?

Thanks.

MustangSal

I seem to recall that the last time I scrolled through my TPMS screen, it said 38psi on all four. I didn't really put any mind to it. What does it say on the sidewall of the tires?

pbxcomm

Hi.. Tire pressure recommendation on the GS 350 is 33lbs.. I've done much research on this and I think there's a thread (somewhere).
So, tire pressure recommendations back a few years were 30lbs. Then, the MPG wars began and that's when Toyota jumped and bumped up the recommendations to 33. This improved average MPG and left them competitive in this market.
There's yet another factor, tire pressure gauges and the inaccuracies. Most gauges are off 3lbs from a calibrated "Master Gauge" (they read low) such as a Schrader master gauge and as you know tire pressure should only be checked cold (vehicle sat for at least 4 hours or under 1 mile of driving time). So that all said, I find the sweet spot for my vehicle is 31lbs @ 70F.. This is according to all four tires read from the TPMS/Techstream (which in fact is fairly accurate). Your ideal pressure may vary, you may find 30lbs more to your liking.

atrac7

Dealers and side sticker says 35 I believe. I always decrease the pressure however. 35 rides too stiff on performance tires. I prefer 30-32.

JDR76

Per my '15 owner's manual:

225/50R17 94W - 33 psi front and rear
235/45R18 94Y - 33 psi front and rear
235/45R18 94V - 2WD 35 psi front and rear
- AWD 33 psi front and rear
235/40R19 96Y XL, 265/35R19 94Y, 235/40R19 96V XL - 35 psi front, 36 psi rear

I just use the recommended 35 front/36 rear for mine.

prwdmd

Your TPMS screen shows the actual pressures not the recommended pressures. Also don't ever fill a tire based on the sidewall markings... those are generally maximum pressures... you don't ever want to be anywhere near that unless you like a bone jarring ride and premature tire wear.

Thanks for the feedback guys... I figured the recommended pressure for the GS350 was going to be around 33... that's what feels best to me. Cold filling to 35 ends up being near 40 psi after a little time on the highway...

jtrue28

Car is reading between 32-34. It's getting colder here, so when the time comes, I'll put the pressure back to 35. Although, we actually get snow here, so I don't want to over-inflate.

2Squared

The dealer filled mine to 34psi (nitrogen)

xRYD3Rx

35PSI what it says on the door on my 2015 GS.

faifai83

I do +2 psi over recommended cold for better fuel economy

richard203

iTrader: (1)

f sport is front 35 and rear 36 that is when its cold.

Nasrul3698

best tire pressure for best handling?

Im2bz2p345

I run 34-35 psi cold on my 2013 GSh all the way around. It usually gets up to 37 psi when warmed up.

By the way prwdmd, add me to your friends list I try to add & unite all the hybrids owners on CL (not many of us)!

~ Im2bz2p345

MustangSal

Thanks, I knew that the TPMS is showing actual pressures. Why would it show anything else?

Generally, most tires have a range of tire pressures on the sidewall of a tire. And thanks but I've been filling tires based on those sidewall recommendations for more than 25 years of owning vehicles without suffering seemingly bone jarring rides or premature tire wear, ever.

Curious. what happens if you change manufacturers to a tire that isn't spec OEM with the vehicle and it has a different manufacturers pressure recommendation (on the sidewall generally) than the ID plate on the inner drivers door frame? You'd oppose that in order to be in compliance with the ID plate recommendation? Doubt it. You'd follow the recommendation on the tire (or should).

Afrosheen

I run between 31 and 35. Every time the temp dips 20 degrees it magically loses a few pounds. One thing I noticed when running on the low side, the car has less of a tendency to follow imperfections in pavement and yank the steering wheel on dips in the road. 33 is probably a little high in my opinion if you value ride quality and handling.