[Huey52]

I too run 38 psi on my RWD 20". It's a considered compromise between often solo driving but also often spur of the moment home center goods et al transport. I too go by the linked loading-dependent Euro placard and not the 'merican one [large] size fits all placard.

Use a quality gauge but most important is to always use the same gauge for consistency. Although I have a very good analog dial gauge in my garage wall locker, and a pen gauge in the glovebox, I mostly use the one on my ol' Craftsman inflator since I'm adjusting with same anyway. Again, consistency matters.
btw: That's when Craftsman products lasted a lifetime, and it has thus far.

I run 38 on 19", and I think this same info here applies to 20";

Check your tire pressure on a new car, esp. at altitude

I checked my tire pressures on my 1 day old ID.4 and they were all at 47psi (cold, 10F) which is too high for what I like.The 44 on the door is full load and I usually just have me and 1 passenger, so I like the VW euro recommendations on that which is 36 at half load. (edit: decided to go 38...

www.vwidtalk.com

Thanks I read that Thread, but I still didn’t see anyone with 20” AWD share what psi seems like a nice compromise, or what VW recommends not fully loaded. 44psi is way too high.

What tool do folks recommend for checking tire pressure?

 

[Atlant]

But then I still lament the loss of cycles per second to 'Hertz.' 🤪

Do you also mourn “mmf” becoming “pF” and “0.001 mfd” becoming “1.0 nF”?

(Just checking, 'cause I go back to at least the second of those two transitions.)

 

[Atlant]

Regarding tire pressure gauges, my 2021 Pro S came with a very nice one in the tire-repair goodies bag; I've moved it to the glove box. It can read up to a pretty high pressure so it will be useful for the tires on my 2012 Volt as well (where I tend to run 44 psi).

Regarding a different conversation we're having: This is one of the places where real TPMS sensors shine. Once you've convinced yourself that they are well calibrated (and they usually are), 1) you don't need your tire pressure gauge again, 2) you can quickly check how well you've balanced the pressure among the four tires, and 3) you can see the tire pressures cold and hot and so assess whether you might be running too much pressure given the heating that occurs while driving.

 

[Huey52]

Whereas I appreciate a "Faraday cage" I also lament the transition to his "pico." And anything nano is just too small. 🤪

Do you also mourn “mmf” becoming “pF” and “0.001 mfd” becoming “1.0 nF”?

(Just checking, 'cause I go back to at least the second of those two transitions.)

 

[SunWizard]

or what VW recommends not fully loaded.

The chart in post#1 is what VW recommends in the EU, same for 19 or 20s: 36 psi all around when half load.

 

[Huey52]

Oh no, you didn't. 🤦‍♂️ My least favorite subject !!!! Here we go again @Plant Peon

Let's beat the rear drum brake dead horse while we're at it. 🤷‍♂️

Regarding tire pressure gauges, my 2021 Pro S came with a very nice one in the tire-repair goodies bag; I've moved it to the glove box. It can read up to a pretty high pressure so it will be useful for the tires on my 2012 Volt as well (where I tend to run 44 psi).

Regarding a different conversation we're having: This is one of the places where real TPMS sensors shine. Once you've convinced yourself that they are well calibrated (and they usually are), 1) you don't need your tire pressure gauge again, 2) you can quickly check how well you've balanced the pressure among the four tires, and 3) you can see the tire pressures cold and hot and so assess whether you might be running too much pressure given the heating that occurs while driving.

 

[Atlant]

Whereas I appreciate a "Faraday cage" I also lament the transition to his "pico." And anything nano is just too small. 🤪

Did you see that they've announced four new official SI prefixes?

Ronnametres and quettagrams have joined the ranks of SI units

• Ronna and Quetta for the big numbers (10^27 and 10^30)
  
  
• Ronto and Quecto for the little numbers (10^-27 and 10^-30)

 

[Huey52]

Well, the universe is getting bigger, and quantum realm smaller and more entangled, not to mention our now Earthly 8 billion.
btw: when I was a kid it was 3 billion ....

Did you see that they've announced four new official SI prefixes?

Ronnametres and quettagrams have joined the ranks of SI units

• Ronna and Quetta for the big numbers (10^27 and 10^30)
  
  
• Ronto and Quecto for the little numbers (10^-27 and 10^-30)

 

[SunWizard]

What tool do folks recommend for checking tire pressure?

I use a digital one like this for $6 including shipping:

🔥LAUNCH X431 PRO3S+ V5.0 Bidirectional Car Diagnostic Scanner Tool Key Coding | eBay

The systems include but are not limited to LAUNCH X431 Pro3s+ V5.0,2025 Newest Version,Expert Functions AllL--In-One,From Beginner To Master(5 Years Back Up,2 Years F.ree Update). Designed for Every Technician.

www.ebay.com

 

[Plant Peon]

Oh no, you didn't. 🤦‍♂️ My least favorite subject !!!! Here we go again @Plant Peon

Let's beat the rear drum brake dead horse while we're at it. 🤷‍♂️

I expect those two will keep reoccurring anew with each new batch of users to this forum. You can probably even use those threads to track new user fluctuations. 😂

 

[Kief]

The chart in post#1 is what VW recommends in the EU, same for 19 or 20s: 36 psi all around when half load.

And for AWD too?
Thanks

 

[Huey52]

Yep. Loading is loading.

And for AWD too?
Thanks

 

[Manybees]

I expect those two will keep reoccurring anew with each new batch of users to this forum. You can probably even use those threads to track new user fluctuations. 😂

Along with the panicked posts from new owners who haven’t done much homework before their purchase: “I think my battery in my new ID.4 is degraded. I just drove 120 miles at 80mph uphill against the wind in 20F temps, and my battery only has 30 miles left in it. Anyone else seen this? VW said the battery holds 265 miles, which is clearly false advertising. ” 😅

 

[Huey52]

In yesterday morn's very cold ambient drive I still did a double-take at the GOM. Then a mental "oh yeah, it's cold ..."

Along with the panicked posts from new owners who haven’t done much homework before their purchase: “I think my battery in my new ID.4 is degraded. I just drove 120 miles at 80mph uphill against the wind in 20F temps, and my battery only has 30 miles left in it. Anyone else seen this? VW said the battery holds 265 miles, which is clearly false advertising. ” 😅

 

[SunWizard]

Running pressure too high like 44 when not fully loaded is resulting in a lot of premature inside wear for many on the forum:

Unusual tire side wear - anyone else have this issue?

Hey all, after reading the "Tires!" thread, I was unsure what the verdict was on Bridgestone's warranty coverage for OEM tires. Do they do pro-rated coverage? My dealer says no but I'd like to hear what other experienced My issue: ID.4 1st Ed was not holding air on rear passenger tire. Dealer...

www.vwidtalk.com

Tire pressures?

Can someone with a European vehicle, or @VW TECHNICIAN , please confirm the factory recommended tire pressures for 20 inch wheels? I am just getting around to not using the US label 42/42 psi pressures. I have started with 36F / 38R, and I’m very happy with the more comfortable ride. Handling...

www.vwidtalk.com

 

[Atlant]

Running pressure too high like 44 when not fully loaded is resulting in a lot of premature inside wear for many on the forum:

Unusual tire side wear - anyone else have this issue?

Hey all, after reading the "Tires!" thread, I was unsure what the verdict was on Bridgestone's warranty coverage for OEM tires. Do they do pro-rated coverage? My dealer says no but I'd like to hear what other experienced My issue: ID.4 1st Ed was not holding air on rear passenger tire. Dealer...

www.vwidtalk.com

Tire pressures?

Can someone with a European vehicle, or @VW TECHNICIAN , please confirm the factory recommended tire pressures for 20 inch wheels? I am just getting around to not using the US label 42/42 psi pressures. I have started with 36F / 38R, and I’m very happy with the more comfortable ride. Handling...

www.vwidtalk.com

Please note that I said this was for my Volt; I have no recommendation for ID.4s (yet).

And the Volt wears its tires evenly at that pressure.

 

[Dougie01]

Tire pressure gauges get in accurate with age, with normal use, by dropping, by sitting in a hot trunk or garage, etc. Also, they are not exactly precision laboratory instruments to start with. The best plan, I think, is to get new ones fairly often, compare readings, and try to eliminate the outliers.

 

[Atlant]

Tire pressure gauges get in accurate with age, with normal use, by dropping, by sitting in a hot trunk or garage, etc. Also, they are not exactly precision laboratory instruments to start with. The best plan, I think, is to get new ones fairly often, compare readings, and try to eliminate the outliers.

A Slime-branded digital tire gauge got weird after I let it get overheated in the Sun. After that, it read very high compared to reality and it took comparisons with an old-but-reliable “stick gauge” to prove this. After that, I'm a bit gun-shy on trusting fancy digital gauges again.

 

[Neil]

Regarding tire pressure gauges, my 2021 Pro S came with a very nice one in the tire-repair goodies bag; I've moved it to the glove box. It can read up to a pretty high pressure so it will be useful for the tires on my 2012 Volt as well (where I tend to run 44 psi).

Regarding a different conversation we're having: This is one of the places where real TPMS sensors shine. Once you've convinced yourself that they are well calibrated (and they usually are), 1) you don't need your tire pressure gauge again, 2) you can quickly check how well you've balanced the pressure among the four tires, and 3) you can see the tire pressures cold and hot and so assess whether you might be running too much pressure given the heating that occurs while driving.

Maybe real TPMS sensors will allow tire pressure adjustments on some cars. My GLC300 only displays tire pressure after you drive a short distance. It's very useful to determine which tire needs a pressure adjustment. However I still need a gage to adjust pressure.