Tire Size, Capacity Comparison

[brillmtb]

Looking for a set of tires for everything but dead of winter as I put a dedicated set of Nokians on for that. I was looking at the Duratrac in the 35/12.5 size. Rating below.

LT 35X12.50R20
121Q E BSW 34.8" 12.5" 8.5-11" 10" 18/32" E 3195 lbs 65 psi 63 lbs 598


As you can see they are 121Q but 3195 capacity but 65psi. Do I really need to run 80psi tires or higher capacity. I have a 2017 3500 and an Artic Fox 27-5l as the heaviest thing I put in the back. Perhaps 2000lbs tongue weight?

 

[Regcabguy]

With that heavy cabover I'd want a load capacity more like 3800#.
I've got 3195# tires on mine and it's a popup.

 

[lpennock]

The 35x12.50r20 along with LT metric sizes over 305 are consider flotation tires. A flotation tire is rated at 65psi in a E rating rather than the 80psi in a non-flotation tire. What matters is the load rating such as the E121, ie the actual weight rating. With that said a flotation tire tends to have a bit more side wall flex so you could feel more tire sway.

If you want a non flotation LT tire that is in the 35" class, take a look at a LT295/65R20. It is a 11l.8" wide 35.1" tall tire with a 4080LB@80PSI E129 rating.

 

[JPM]

I have a set of 5 Ricksons that will bolt right on, about 5000lbs cap each! And you gain a lot of stability compared to any light truck/car tires.


https://quadcities.craigslist.org/grd/d/clinton-5-rickson-wheels-195tires-fit/7072683924.html

 

[AH64ID]

I would want more than 3195 and more than 65# for any towing/hauling.

 

[brillmtb]

I dont see a duratrac in LT295/65-20

 

[brillmtb]

Just found this, I swear there was only an E rated when I posted this did I miss this or did they just respond exactly to what we need for heavier towing in the same size!!!

• 35X12.50R20LT
• Product Code312080142
• Speed RatingQ
• Load Index125
• Load RangeF

 

[JPM]

Just found this, I swear there was only an E rated when I posted this did I miss this or did they just respond exactly to what we need for heavier towing in the same size!!!

• 35X12.50R20LT
• Product Code312080142
• Speed RatingQ
• Load Index125
• Load RangeF

what are your stock wheels rated at?

 

[brillmtb]

Went with the duratracs 35/12.5 F load range. Quite smooth handle nice so far.

 

[Cummins12V98]

My Son really likes NITTO Ridge Grapplers 50-60k 35/12.50 F. He paid $320 ea but have gone up. He goes to the dump pulling a dump trailer a lot in crappy conditions and the tires dig really good.