Why different pressures front and rear?

[LDB]

35/33 F/R in my 2024 CR-V. I presume due to being front heavy with bulk of drivetrain ahead of the front axle. On a truck I'd guess because they are always heavily loaded and working not driving around empty as a ridiculous daily transportation only.

 

[Jetronic]

Does not say loaded or not loaded..

it'll be rear heavy when fully loaded, so extra pressure on the rear axle. think about it, front passengers sit behind the front axle (torso about center between front and rear axle), rear pretty much on the rear axle, trunk is behind the rear axle.

 

[Marcozi]

My 2018 CRV says 33psi in the front and 30psi in the back. I'm guessing because it's more front heavy?

It's FWD.

 

[Marcozi]

I've owned bimmers since 1974 (!). Yeah, I'm old. The weight distro of most bimmers is near 50/50. My current ride is about 51%f, and 49%R. The car has staggered tires. I keep the tire pressures at 35f and 37r. If I increase the front pressures to 36 the car gets a bit tail happy.

 

[kschachn]

Nose-heavy pigs of cars require usually considerably higher tire pressure in the front. Vehicles around 50/50 weight distribution have identical or very similar front and rear pressure. Load (driver, passengers, cargo)) commands an adjustment in tire pressure and this is reflected by the label that is either inside the gas flap or on the door jamb. In trucks the load is of course an even more important factor.

And yet the one car I had with different front/rear pressures (my 530i) had nearly exact 50/50 weight distribution. What was also weird to me was this asymmetrical pressure was only applicable to the US market. It specified the same size tires both front and rear.