tire pressure: actual vs recommended
- Thread starter wbwanzer
- Start date
With my jeep 7 PSI under... the tires are oversize .
I stick with the manufactures recommended tire pressures on my 2023 Hyundai Ioniq 6 36psiF and 37psiR with OE Pirelli P-Zero EV tires.
I mostly strive for door placard pressures (35 PSI in the AWD Pilot and FWD Equinox, 26 in the Miata) but don't fret if weather swings happen, as you'll be chasing the needle as these crazy temps pass by. 25 degrees one day, the front blows over, and temps swing to 95 degrees. The tires can handle a few PSI (say 10%) over/under. I also consider vehicle load. Full load, I run the door placard pressures. If I'm lightly loaded, I'll drop a single PSI or 2, and also keep the heavy end 2 or 3 PSI over the light end. So, the typical Equinox operation is a one person light load, and I run 33-34 in the front and 30-31 in the rear.
I usually add 4 PSI at the pump because the placard is the recommended cold tire pressure.
By the time I get to Costco to use their nitrogen air pump, I've driven 10+ minutes and the tires are warmer.
Hot tires typically have a PSI 2–6 PSI higher than cold tires due to heat generated by driving.
As a general rule, tire pressure increases by roughly 1 PSI for every 10°F (or 1–2 PSI per 10°C) increase in temperature.
By the time I get to Costco to use their nitrogen air pump, I've driven 10+ minutes and the tires are warmer.
Hot tires typically have a PSI 2–6 PSI higher than cold tires due to heat generated by driving.
As a general rule, tire pressure increases by roughly 1 PSI for every 10°F (or 1–2 PSI per 10°C) increase in temperature.
Go in and do your shopping and let your tires cool.
I tried that before but sometimes there can be long waits (only 2 pumps but there have been occasions where customers park there leaving only 1 available
) & I don't want my frozen foods to be unrefrigerated longer than needed.Thats why they make those Black Costco insulated bags!
I don't like paying for gas, so I over-inflate and usually go around 38-40psi in all my car.
When I swap tires in the spring and fall, I always check the wear with a caliper. If the tires are worn too much in the middle I will run lower PSI for that period (6 months until I put the other tires on). But I don't see this very often. I don't think you can go wrong going up to 40psi and I don't think it affects ride quality very much either.
When I swap tires in the spring and fall, I always check the wear with a caliper. If the tires are worn too much in the middle I will run lower PSI for that period (6 months until I put the other tires on). But I don't see this very often. I don't think you can go wrong going up to 40psi and I don't think it affects ride quality very much either.
Some of us run different size tires than factory so Load and Inflation Tables are a good source of info. They’re brand agnostic - all the same industry standard for a given tire specification.