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Tire pressure change from OEM to LT 10 Ply Load Range E tires?

map246

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I purchased a travel trailer that is definitely pushing the limits of my 1500. With that purchase, I upgraded the stock 270/55R20 4 ply tires to a 10 ply Load Range E LT tire of the same size.

I know that generally, a 10 ply tire needs a higher PSI. I plan on starting at about 44psi and adjusting from there. The stock tires (from the door sticker) should be at 36psi. I will do a chalk test to confirm.

With that out of the way, will running the increased PSI on the new tires, throw my onboard TPMS into a tizzy and light up my dash? If so, is there a work around?

Thanks!
 
I purchased a travel trailer that is definitely pushing the limits of my 1500. With that purchase, I upgraded the stock 270/55R20 4 ply tires to a 10 ply Load Range E LT tire of the same size.

I know that generally, a 10 ply tire needs a higher PSI. I plan on starting at about 44psi and adjusting from there. The stock tires (from the door sticker) should be at 36psi. I will do a chalk test to confirm.

With that out of the way, will running the increased PSI on the new tires, throw my onboard TPMS into a tizzy and light up my dash? If so, is there a work around?

Thanks!
I've never seen an issue with higher PSI; it really only shows an alert when it is lower than the set threshold.
 
I do not know what the magic number might be, I have had LT tires with a max psi of 80 (a 2500 Yukon XL). I think the minimum pressure might have been 50, do not recall.

My concerns would be what the minimum tire pressure should be and what the TPMS valve stems have as a maximum pressure. Do need to be in that range.

I do bless the chalk test to find the right pressures front and rear, both unloaded and when towing.
 
I purchased a travel trailer that is definitely pushing the limits of my 1500. With that purchase, I upgraded the stock 270/55R20 4 ply tires to a 10 ply Load Range E LT tire of the same size.

I know that generally, a 10 ply tire needs a higher PSI. I plan on starting at about 44psi and adjusting from there. The stock tires (from the door sticker) should be at 36psi. I will do a chalk test to confirm.

With that out of the way, will running the increased PSI on the new tires, throw my onboard TPMS into a tizzy and light up my dash? If so, is there a work around?

I had my Dodge Challenger's tires pumped up to around 40 PSI when it was stored over the winter. I took it out for a spin one day when it was nice outside, and it gave me a TPMS alarm due to over inflation. I don't know if the trucks behave the same way though.
 
There is a website with a calculator that will show you what they should be. Google it, I’m on my phone. I assume you know it is a load range E tire and not a 40year old “10 ply”, unless of course you have G60s on your car yet.;)
 
There is a website with a calculator that will show you what they should be. Google it, I’m on my phone. I assume you know it is a load range E tire and not a 40year old “10 ply”, unless of course you have G60s on your car yet.;)
You are correct. I will search for the website.
Thanks!
 
Ive been running my E rated at 38 w/o any issue..first ive ever read or heard that they “need” to be run at a higher psi. Any reason behind this? Or is it just a “the way i was told to” sort of thing.
 
Ive been running my E rated at 38 w/o any issue..first ive ever read or heard that they “need” to be run at a higher psi. Any reason behind this? Or is it just a “the way i was told to” sort of thing.
Certain tires may need a different pressure range compared to stock tires. In particular, while tires for a heavier load would clearly need higher pressure for that load, tire construction may also require higher pressure to reduce heat damage from flexing.

The flip side of this is a tire requiring higher pressures and designed for higher loads may ride harshly and wear more in the center when not loaded as designed. Technically, it is over inflated for the load it is carrying but each tire does have some minimum pressure. Maximum load and pressure is on the sidewall, minimums are not.
 

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