Correct Tire Pressure
#1
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Correct Tire Pressure
I have 235/55R18 tires on my new NX sport. The dealer put 37 PSI in all tires. The door indicates all tires should be 32 PSI. Car tires great, but might be a little bouncy. Being new, hard to compare to anything. Did the dealer over inflate? Should I put what is indicated on the car? Thanks.
#2
I have 235/55R18 tires on my new NX sport. The dealer put 37 PSI in all tires. The door indicates all tires should be 32 PSI. Car tires great, but might be a little bouncy. Being new, hard to compare to anything. Did the dealer over inflate? Should I put what is indicated on the car? Thanks.
#3
The pursuit of F
Overinflation of tires is a common practice across all Lexus dealers. Even their loaner cars are high.
32 psi is recommended. You can go 2-3 psi below or above if you like depending on your comfort (less PSI) vs MPG (higher PSI) preference.
32 psi is recommended. You can go 2-3 psi below or above if you like depending on your comfort (less PSI) vs MPG (higher PSI) preference.
#4
I am set at 33 and when driving at 60MPH they go to 36-7PSI and the ride is good
When I picked up from dealer they were set at 40PSI and up to 48 while driving and it was too much, creating a very rought ride
When I picked up from dealer they were set at 40PSI and up to 48 while driving and it was too much, creating a very rought ride
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I set mine to 32 on cold tires as recommended on the door. The TPMS was showing 32 was too low. Tried resetting the system but the low pressure alert was still present. Had to up mine to 35. Anyone else experience this? Or know a fix?
#6
This isn't normal. Sounds like a visit to the dealer may be in store for you. 32 PSI cold pressure is the target PSI on stock tires.
#7
Pole Position
It's possible that your gauge is off and you were setting the pressure too low.
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#10
The pursuit of F
Please double check your manual and be safe!
#11
Pole Position
But thanks for the concern bro...
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Thanks for all the great feedback on this question. I brought my tires down to 33 according to my tire gauge. Much softer side. When I checked the cars dash screen that shows the tire pressure, it shows 34 in all. I'll assume the car's dash numbers are more accurate that my digital tire gauge. Also, why do Lexus dealers put so much pressure in the tires? Why do they see that as a positive?
#13
Lexus Test Driver
The pressure in the tires seems to vary a lot between driving conditions. On a 58F morning, I can see 33psi in the tires and will get it up to 35psi by the time I get to work, but when its 80F in the afternoon it will be 37psi and will get to 39psi by the time I get home.
I think its the size of the tire, and the shear amount of rubber that causes so much variation in the pressure.
Honestly, I'm leaving it where it is. The ride is smooth and my tires are too new to show any type of wear that will allow me to adjust.
I think its the size of the tire, and the shear amount of rubber that causes so much variation in the pressure.
Honestly, I'm leaving it where it is. The ride is smooth and my tires are too new to show any type of wear that will allow me to adjust.
#14
After putting back to 32psi, I find the ride much better. It does vary with temps lately with the hot weather....usually goes up to 35psi.
#15
Lexus Test Driver
Thanks for all the great feedback on this question. I brought my tires down to 33 according to my tire gauge. Much softer side. When I checked the cars dash screen that shows the tire pressure, it shows 34 in all. I'll assume the car's dash numbers are more accurate that my digital tire gauge. Also, why do Lexus dealers put so much pressure in the tires? Why do they see that as a positive?
The pressure in the tires seems to vary a lot between driving conditions. On a 58F morning, I can see 33psi in the tires and will get it up to 35psi by the time I get to work, but when its 80F in the afternoon it will be 37psi and will get to 39psi by the time I get home.
I think its the size of the tire, and the shear amount of rubber that causes so much variation in the pressure.
Honestly, I'm leaving it where it is. The ride is smooth and my tires are too new to show any type of wear that will allow me to adjust.
I think its the size of the tire, and the shear amount of rubber that causes so much variation in the pressure.
Honestly, I'm leaving it where it is. The ride is smooth and my tires are too new to show any type of wear that will allow me to adjust.