If that's well above what the manufacturer recommends, you may make your car unsafe. It reduces the contact patch size which decreases traction. Wet braking seems to be impacted the most. The extra few percent of efficiency aren't worth a less safe car, with a less comfortable ride, and less tire life.
-
Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
what PSI do you inflate your tires to
- Thread starter hybrid>EV
- Start date
exxxviii
Member
Benito1283
2021 MYLR 19"
Not sure what your altitude is, but TPMS will read increasingly (falsely) lower than a gauge as you gain in altitude. I'm a mile high and my TPMS reads 2-3 PSI lower than several good gauges. I like my tires around 38 PSI (with the gauge), which means 35-36 on TPMS which occasionally activates the low pressure warning.
At high altitude, TPMS should really only be used to assess the tire pressures relative to one another, while gauges will give the more accurate reading. I wish there was a way to adjust the TPMS reading based on altitude. Certainly this could be achieved via software feature/update.
All TPMS should read within 1 PSI of the reading using a quality tire pressure gauge. (I use an analog dial readout Intercomp tire pressure gauge that measures up to 60 PSI.)
SalisburySam
Active Member
Not all. My 1964 Ford Thunderbird owner’s manual recommends 24psi all around, and 28psi for loads or high speeds. It weighs in at about 4430lb/2009kg. Those were bias ply tire recommendations of course.
exxxviii
Member
I said Tesla has the highest recommended PSI I know about, not lowest. And the comparison was modern BEVs, not 60 YO collectables.
Is this cold tire pressure or hot (after car has run for at least 30m) ? break it up for me please
Also is it right pressure for winter (east coast winter highway drive)?
If I can add more to the twist - is it recommended for <500 mile new car (I believe new tires need some “break in” time?)
Oh 19” Gemini tires for perspective
Appreciate your inputs. Thanks!
Could I also ask you if you did alignment during those 18k miles and at what point in terms of miles?
I had Model 3 and OEM lasted only 18k. My second set has lasted close to 30k now! Though nearing its life and due a swap.
Location of drive and style did not change much. With 2nd set I was proactive in getting alignment done about 1–1.5 yr window. Where I am the roads make it so that alignment goes off (hilly/bumpy on slopes) rather quickly and that causes tires to wear out much quicker.
Just trying to share and also know about your alignment experience. When I took in for alignment first time the tech told me the alignment was very off and would have impaveyd the tire tread quite adversely
You should always check the tire pressure when the tires are cold, i.e. when the vehicle has been parked (out of direct sunlight) for at least several hours. Early in the A.M. is usually a good time to check the tire pressure.
The manufacturer's recommended tire pressure is always printed on the sticker on the "B" pillar by the driver's door. For the Tesla Model Y this is 42 PSI. (The Tesla Model Y uses Extra Load (XL) rated tires. XL tires always have a recommended tire pressure of 41 PSI (EU) or 42 PSI (US) to meet the stated load rating for the tire.
The tire's maximum inflation pressure is always molded into the sidewall of the tire. You do not want to inflate the tires to the maximum pressure as the ride would be very harsh and the tires would wear unevenly with excess wear in the center of the tread.
You can safely set the tire pressure to +/- 2 to 4 PSI (5% to 10%) from the recommended pressure with no issue. Underinflation can affect the tire wear (causing the outer edges to wear faster than the center of the tread). Extreme underinflation can affect handling and cause the tire to run hotter than is safe. Extreme underinflation is a leading cause of tire failure. The Tesla Model Y will display a warning if the tire pressure becomes too low.
The manufacturer's recommended tire pressure is always printed on the sticker on the "B" pillar by the driver's door. For the Tesla Model Y this is 42 PSI. (The Tesla Model Y uses Extra Load (XL) rated tires. XL tires always have a recommended tire pressure of 41 PSI (EU) or 42 PSI (US) to meet the stated load rating for the tire.
The tire's maximum inflation pressure is always molded into the sidewall of the tire. You do not want to inflate the tires to the maximum pressure as the ride would be very harsh and the tires would wear unevenly with excess wear in the center of the tread.
You can safely set the tire pressure to +/- 2 to 4 PSI (5% to 10%) from the recommended pressure with no issue. Underinflation can affect the tire wear (causing the outer edges to wear faster than the center of the tread). Extreme underinflation can affect handling and cause the tire to run hotter than is safe. Extreme underinflation is a leading cause of tire failure. The Tesla Model Y will display a warning if the tire pressure becomes too low.
Last edited:
36 PSI all around on my MYP because 42PSI is a stupidly high pressure to run on road tires and unnecessary.
I've also moved from the stock 255/35/21 / 275/35/21 tires to larger 275/35/21 and 295/35/21 tires which have higher load ratings. These actually have the same load rating at 35psi as the stock tires do at 42psi.
Great win for comfort with no impact on load rating or safety.
I've also moved from the stock 255/35/21 / 275/35/21 tires to larger 275/35/21 and 295/35/21 tires which have higher load ratings. These actually have the same load rating at 35psi as the stock tires do at 42psi.
Great win for comfort with no impact on load rating or safety.
Almost nothing. I'm averaging 176wh/km (281 wh/m) over the last 6000km since putting on the larger tires. Previously on stock I was averaging around 170 wh/km - so the difference is about 6 wh/k (10 wh/m).
If you're at 42 now that's an alignment issue not pressures.
Similar threads
- Article