Who is switching to winter tires and steel wheels?

[Boxster17]

Where does Mazda recommend this?

It's in the owner's manual under Winter Driving, here's a screenshot from the PDF manual:

I had never noticed this until mentioned in this thread. I've typically gone 2-3PSI over the door jamb, but I may try it a bit higher this year.

I feel like that 120km/h speed rating would be dependent on the tire rating. Not really sure why they mention that?

It's still pretty mild here, so I'm waiting a bit longer before swapping to winter tires. Will likely be in the coming weeks though.

 

[N7turbo]

Where does Mazda recommend this?

They don't. If the tire clearly says 36 psi max, then you don't exceed 36 psi.

 

[banjos-n-beer]

I ran mine +4 PSI per the owners manual.

I’ll have to check if they recommend the same for the CX70.

 

[FerrariF1]

It's in the owner's manual under Winter Driving, here's a screenshot from the PDF manual:

View attachment 378987

I had never noticed this until mentioned in this thread. I've typically gone 2-3PSI over the door jamb, but I may try it a bit higher this year.

I feel like that 120km/h speed rating would be dependent on the tire rating. Not really sure why they mention that?

It's still pretty mild here, so I'm waiting a bit longer before swapping to winter tires. Will likely be in the coming weeks though.

Thanks. I didn't know that. Good idea. I've always done 2 or 3 PSI more than the door jamb, but I didn't know the manufacturer recommended that as well.

 

[N7turbo]

Thanks. I didn't know that. Good idea. I've always done 2 or 3 PSI more than the door jamb, but I didn't know the manufacturer recommended that as well.

Read carefully:

"but never more than the maximum cold-tire pressure shown on the tires".

 

[FerrariF1]

Read carefully:

"but never more than the maximum cold-tire pressure shown on the tires".

Yes. Door jamb says 36psi, tire max is 51psi. So 38psi is safe...

 

[N7turbo]

Yes. Door jamb says 36psi, tire max is 51psi. So 38psi is safe...

You must have winter tires. That is the key as that excerpt is specifically about winter tires:

"Inflate snow tires 4.3 psi more than recommended on the tire pressure label (driver's door frame)..."

But I've seen this advice going around on the forums lately as if it applied to just winter driving in general. There is no need to increase tire pressure just because it is cold outside.

 

[FerrariF1]

Yes, I have winter tires. I normally install them when it's 5 deg C outside. Inflate them to say 38 or 40 PSI. Once it drops to -20 deg C outside, they'll be down to 36 PSI.