Air pressure and speed differential on 32's

[Kathy]

Hi, I'm wondering what air pressure Should I have in my new 32 inch bfg ko 2's for highway riding ? Also , wondering how off is my speedometer with the bigger tire? Thank you!!

 

[Rob5589]

Try 26-28 and see how they feel. The speedo could be off from 1 mph to 50 mph Seriously, check it with a gps app on your phone and go from there.

 

[VirtualRussel]

Hi, I'm wondering what air pressure Should I have in my new 32 inch bfg ko 2's for highway riding ? Also , wondering how off is my speedometer with the bigger tire? Thank you!!

Assuming your Jeep originally came with 29s then you're speedometer is going to be off by ~10%. Follow @Rob5589's advice and use a GPS to verify.

 

[Jerry Bransford]

Hi, I'm wondering what air pressure Should I have in my new 32 inch bfg ko 2's for highway riding ? Also , wondering how off is my speedometer with the bigger tire? Thank you!!

For a 32, I'd run around 27 around town when lightly loaded (like just you and a passenger) and 29 psi when fully loaded with passengers and/or gear.

You'll be driving faster with 32's than your speedometer indicates so be wary.

 

[Kathy]

Try 26-28 and see how they feel. The speedo could be off from 1 mph to 50 mph Seriously, check it with a gps app on your phone and go from there.

I forgot I had an app that monitored my speed and its about 4 mph off. Thanks again!!

 

[Shane Mckinley]

I went from 235’s to 32” and I’m off 6mph ie 50 is more like 55/56mph

 

[mots]

I’m running 27 PSI around the city and some highway with 32” KO2’s. Thats the sweet spot for me, these tires are great.