GVWR, AXLE Ratings, and Tire Load Range???

[Baja_Man]

A few questions regarding these topics.....I will be replacing tires this weekend and ran across developed these questions as I was tire shopping/researching.

SPECS

The OEM manufacturer sticker on front left side of my Toyhauler indicates:

GVWR of 13000#
Axle Rating of 6000# per axle
Tire size of 235/80/16D (3000# rating each)

Questions:

1. How can there be a 13000# GVWR if 2 axles and 4 tires are rated at 12000#? What about the missing 1000#?

2. Is there a problem if I replace tires with 235/80/16 E rated with 3420# rating?

Thanks!

[Boomerweps]

Apparently this method of adding in the tongue weight to the GTWR is common. I ran into the same deal on my 3877# GTWR on a TT with a 3500# single axle. Initially mind blowing! Of course, all that tongue weight eats up CCC on the TV.
IMHO having higher capacity tires not only gives you more impact resistance, but allows for extra trailer side loading on turns and curves.

[Cummins12V98]

GY ENDURANCE in your size in load range "E". Inflate to 5 psi over what the weight/inflation chart dictates. Carry on!

[wnjj]

Grit dog wrote:
Someone better disagree with something soon or this won't be a proper rvnet thread! Lol

I disagree with your idea of someone disagreeing! 😉

[lenr]

IMO--yours may differ:
Sorry, nothing to bash above--I know I'm letting readers down. However, I would enhance: Load range E tires (80 psi) aren't just a good idea; they are essential because tires are so often the weak point and take the most abuse from road hazards. Also because this is a toy hauler, depending on load, the tongue weight may be fairly light loading the tires and axles very close to their limits. I would also suggest tires with higher than 65 mph speed rating (Endurance--my choice, or Carlyle) since that provides some extra capacity at normal speeds. However, OP must be absolutely sure that the wheels are rated for 80 psi or new wheels are needed. And be sure those new tires are aired up to 80 psi!

[Grit_dog]

Someone better disagree with something soon or this won't be a proper rvnet thread! Lol

[rhagfo]

Well late to the party!
X4 to the three above!

[Walaby]

#1; Tongue Weight
#2: No problem.. as stated above, gives you some margin, which is fine/good.

Mike

[MFL]

You will have at least 1.5k of hitch wt, so axles/tires are good at 13K GVW. No problem upgrading the tires to E rating, just remember to get that additional capacity, they will need 80 psi, as shown on the sidewall.

Jerry

[CarnationSailor]

Re: #1 - The remaining weight is carried by your truck via the hitch.

Re: #2 - Not a problem, and I think that is a very good idea since it gives you an additional 1680 pounds of safety margin. (Makes it less likely that you will experience a blowout.)