Correct tire pressure
10-12-2015, 05:02 PM
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2017 BMW 230ix convertible, 2018 GLC300
Correct tire pressure
My 2014 GLK250 lists 2 different recommended tire pressures. The label in the driver door jam says one thing and the gas filler door lists another pressure. What is the proper recommended tire pressure?
10-12-2015, 09:03 PM
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350 GLK, C280
Depends on what you like, what the tire is and how you drive. There is no absolutes when it come to that. Anything between 32 and 40 . They will change with weather and with how long you have driven so heat them up.
10-13-2015, 04:09 PM
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2010 E550 P2 w/AMG Sport Package + Pano, 2015 Nissan Pathfinder
This seems to be an issue across many models. Funny thing is when I just had two tires replaced at STS they used a totally different PSI then either my car door or my gas door. After having an issue with two blow outs, I just left it as they had it since it seemed to be on the higher side. I figure it's better to be safe than sorry.
10-14-2015, 12:06 AM
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No right answer. You can play around with the tire pressure to find the more comfortable psi. I keep my wife's at 35-36 cold psi. When we load the car fully I up the pressure to 39 front and 41 rear. Normal daily drive, needed less. The loaner had last week had 33 psi, I didn't notice much of a difference.
10-14-2015, 09:03 PM
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2014 glk 250BT (RIP, 3/1/17}, 2010 C300
gas door.
I change pressures regularly based on load & distance. Higher pressures for economy & heavy loads and lower for handling and comfort. around town 36r 33f, highway full load 40r 35f. half load 38r 34f. All cold psi's.
Road temps in the 90s can build 4-5 psi in hot climates like Florida when your at higher speeds.
I change pressures regularly based on load & distance. Higher pressures for economy & heavy loads and lower for handling and comfort. around town 36r 33f, highway full load 40r 35f. half load 38r 34f. All cold psi's.
Road temps in the 90s can build 4-5 psi in hot climates like Florida when your at higher speeds.
Last edited by LesF; 10-14-2015 at 09:07 PM.
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10-15-2015, 03:02 PM
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W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, C5 Z06 & IS300 race cars, EQE 4Matic+ on order
At 33 (or even 36) psi F you're seriously under-inflating your fronts and risk a blowout at high speeds. Did you guys really not learn anything from the ford Explorer / Firestone fiasco? Under-inflated tires are outright dangerous - the sidewall flexes way too much, overheats and goes "pow"...
10-27-2015, 04:42 PM
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W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, C5 Z06 & IS300 race cars, EQE 4Matic+ on order
For 19" wheels, 35-36 psi all around would be optimal for a light to medium load. 
For 20s, you need at least 39-40 psi (I run mine at 41 psi cold at all four corners) or you run the risk of anything from uneven tire wear and increased fuel consumption to rim damage and possibly a blowout.
For 20s, you need at least 39-40 psi (I run mine at 41 psi cold at all four corners) or you run the risk of anything from uneven tire wear and increased fuel consumption to rim damage and possibly a blowout.
