rtrinidad

I have a GS 350 F Sport. The dealer sold it to me with tire pressure at 45 to 50! One tire was giving a warning of only 26 psi. A tire company suggested I should have all around 35 psi which they did.


Now two the dash is showing a warning on two tires at 37 psi. Should the tires really have pressure over 40 psi to avoid the pressure warning?


I already reset the TPMS.

jtrue28

Check the PSI recommendation on the inside of the driver door. Set all the tires to that, then reset the TPMS.

xRYD3Rx

Should be 35psi all around

ItzFilyO

I believe the sticker says 35 front and 36 rear for F-RWD. Mine drops to 32/33 cold and goes up to 36/37 and 37/38 when moving.

That light should only come on when the psi drops to the 20s.

richard203

iTrader: (1)

should be front 35 and rear 36 for rwd

Afrosheen

RWD Texas car here, I insist on 35 warm all the way around, dealer sets it at 37 despite my complaints, must be 35 cold to them. Door panel confirms 35psi.

45 to 50, someone needs their head checked at that dealer, that's ridiculous. I can't think of anything that needs that much pressure.

2jS160

iTrader: (6)

Door jamb sticker on my 13 F Sport AWD recommends 35 front & 36 rear

spoogenet

What was the real pressure when you reset TPMS? Many answers cover what the pressure should be, but I feel that may not directly address your question.

Jeri

Did you reset "both" TMPS? Mine has another under glove box. I'm guessing for snow tires. If you reset one you have to reset the other as well. Sometimes you have to reset both a few times (car off).

spoogenet

Where actually is the TPMS reset on the '14? The manual shows it under the steering wheel but it doesn't seem obvious to me.

Byprodrive

iTrader: (1)

PSI specs are always stated cold, meaning the car has not been driven, or tires not exposed to direct sun, and ambient temperature is 69 degrees F. Raising tire temp 10 degrees adds 1psi.

bclexus

The word 'cold' refers to the car not having been driven for 4+ hours (preferably overnight) and the tires not exposed to the sun's UV rays. If it's summer time in Dallas - that means 'cold' could be say 80°. If it is winter time in Boston - that means 'cold' could be say 30° or lower.

The key is to tweak your tire pressure to whatever your 'cold' tire pressure should be (e.g. 33psi, 35 psi, 36psi) when your car typically starts out on its daily trip. In my case - at this time of year in Dallas the lows at night are ~80°. My garage will be 80°-85° at sunrise. That will be the lowest temperature my tires will be after sitting overnight in the garage - and that is when I want my tire pressure to be at their recommended 'cold' tire pressure. When I pull the car out of the garage and drive it, the ambient temperature will already be 80° or higher, and going higher - up to 100°+. My tire pressure will increase as much as 5 psi or more due to (1) a 25° increase in ambient temperature, (2) heated road surface, (3) rolling friction, and (4) the sun's UV rays.

Cathy

frankly speaking the recommendations are just what they are - recommendations. GS uses low aspect tires so variations in temperature can cause a wide range in the tire pressure throughout the day. For me, 35psi warm is the best balance of refinement and sport to me so that can be 31-33 psi cold in the morning, depending on how hot it gets in the afternoon.