Tire Pressure
11-03-12, 10:34 PM
#31
Lexus Champion
Thread Starter
The tire pressure monitor on your display should be used as a reference. You should check the pressure in your tires once per week with a pressure gauge for many reasons. Why would you ever need your dealership's help to do this? I used to check my dad's tires for him when I was 5 years old. My goodness.
If you have an F-Sport you have fairly low profile tires. I have found over the years that low profile tires need more care in terms of checking the pressure.
If you have an F-Sport you have fairly low profile tires. I have found over the years that low profile tires need more care in terms of checking the pressure.
Last edited by sydtoosic; 11-03-12 at 10:39 PM.
11-04-12, 06:35 AM
#32
I'll stick with my goodness. You go to all of that trouble to apply HardBody to your car but you are too lazy to maintain the tire pressure in your tires.
okay let me be more specific. i don't take my car to lexus to check my tire pressure. i take it there so that they can correct the pressure in my tires and reset my TPMS monitor. i don't care what you did when you were 5 ("MY GOODNESS") if i feel my car needs to go to lexus then that's what i choose to do. you do you and i'll do me. simple. Have a good night.
11-04-12, 06:39 AM
#33
Every digital tire gauge I could find on Amazon for $20 or less was within approximately the same accuracy range. I do not have a high end gauge.
I would expect that someone who makes such claims about the greatness of TPMS accuracy would provide actual data to backup the comments (we learned to do this in 5th grade when writing book reports). This is a forum where people like to see actual data to backup such claims. We aren't a "VTEC, yo" crowd who uses duct tape and fleeting words to maintain our cars.
I'm sorry I hit a nerve with you.
I would expect that someone who makes such claims about the greatness of TPMS accuracy would provide actual data to backup the comments (we learned to do this in 5th grade when writing book reports). This is a forum where people like to see actual data to backup such claims. We aren't a "VTEC, yo" crowd who uses duct tape and fleeting words to maintain our cars.
I'm sorry I hit a nerve with you.
As I said, 99% of gauges in common use are garbage. Congratulations on your membership in the 1%. You have an accurate, precise instrument (as do I). Keep your eyes (and mind) open for the next while and see what is actually used at dealerships, tire shops, quick lubes, etc. and you'll see how the great unwashed measures. As far as links, get off your butt and dig them up yourself. TPMS sensor spec sheets are widely available online and specific (in)accuracies of different gauges can be found in the stores where they are sold (most auto parts stores).
11-04-12, 07:12 AM
#34
Does different tyre size affect the amount of air pumped into it? Like 17", 18" 19", 20" tyres, any difference? Coz all i see is u guys talking about the amount of tyre pressure pumped in but not talking about the size of the tyres. & how abt the profile of the tyres? Makes any difference? lower profile tyres pumped less as the side walls thinner? As i assume u guys already switched out the stock rims & tyres for bigger sizes like 19", 20"?
11-04-12, 07:19 AM
#35
I can only speak from my personal experience. I have bought 2 of these gauges from Amazon and have used them extensively on 2 Lexus' and 1 BMW over the last 5 years.
Both of these gauges have agreed exactly with the TPMS in my 2013 GS350. The literature that comes with the gauges states:
"Accurate to within 0.05 PSI, reading air pressure from 5-150 PSI in 0.5 pound increments".
I check tire pressures at least every 2 weeks and have never seen any discrepancy between these gauges and the TPMS. I am satisfied with the accuracy of both. I have no governmental studies or Congressional Committee studies to verify these results. It is just my personal experience. Your results may vary.
Both of these gauges have agreed exactly with the TPMS in my 2013 GS350. The literature that comes with the gauges states:
"Accurate to within 0.05 PSI, reading air pressure from 5-150 PSI in 0.5 pound increments".
I check tire pressures at least every 2 weeks and have never seen any discrepancy between these gauges and the TPMS. I am satisfied with the accuracy of both. I have no governmental studies or Congressional Committee studies to verify these results. It is just my personal experience. Your results may vary.
11-04-12, 07:32 AM
#36
Lexus Champion
Thread Starter
12-17-12, 09:55 PM
#37
the tire pressure on the TPMS was 31 31 31 29 on cold.
the door jamb says 35 for front cold, and 36 for rear cold.
i set to 34 front and 35 rear cold to see how it rides.
what psi do you guys run?
the door jamb says 35 for front cold, and 36 for rear cold.
i set to 34 front and 35 rear cold to see how it rides.
what psi do you guys run?
12-17-12, 11:34 PM
#38
Lexus Test Driver
I checked my tire pressure for the first time after the monitoring system said the right front was low. Per recommendations, I let the car sit overnight so that the tire pressure was measured cold. All tires save the right front were indicating about 31/32 psi. The offending tire was down to about 26. I reset all tires to 35 with a guage of known accuracy using a portable compressor. That was over a month ago and all four tires remain at 34/35 when cold. As you know, pressures will increase as heat gets into the tire but I am not sure by how much. Keep us posted on what you find out.
12-18-12, 10:27 AM
#39
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? I run the pressure that's shown on the door jamb. This means that when winter comes, I have to pump up the tires to bring the cold-tire pressure back to 35 psi.
12-19-12, 04:24 AM
#40
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do you guys check your tire pressure monitor? i've been to lexus twice to correct my tire pressure. i checked again the other day and it's steady at 32/33. i know that's the wrong pressure,,, and i've also taken into account the temp. etc. i always let the tires heat up and check and it stays steady at 32/33. and i've been doing that everyday now for a week. before i drive off the monitor may say 31/32, and sometimes it's all over the place, but after i've driven for a while it's steady at 32/33. i'm tired of going to Lexus for these minor issues. it makes you wonder if they really know what they're doing. oh well,,,, guess i'll be making another trip to Lexus. if you have to go back 2 or 3 times after buying a new car,,, okay,,, but after that it really becomes a PITA. we shouldn't be going back at all. just getting some things off my chest fellas.
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