Tire size chart

[sacmarata]

Thought this may be useful to some here. This is not a comprehensive list.

The following is calculated at 700lbs per rim inch (industry standard)


TIRE SIZE.....CROSS SECTION INCHES.....TTL LBS per axle

7.5 R 16.0 LT - 7.5 - 10,500lbs
8.75 R 16.5 LT - 8.75 - 12,250
9.5 R 16.5 LT - 9.5 - 13,300

LT 225/75R 16 - 8.8582677 - 12,402lbs
LT 245/75 R 16 - 9.6456693 - 13,504
LT 215/85 R 16 - 8.4645669 - 11,850
LT 235/85 R 16 - 9.2519685 - 12,953
215/75 R 17.5 - 8.4645669 - 11,850
225/70 R 19.5 - 8.8582677 - 12,402
245/70 R 19.5 - 9.6456693 - 13,504
265/70 R 19.5 - 10.433070 - 14,606
255/70 R 22.5 - 10.039370 - 14,055
245/70 R 22.5 - 9.6456693 - 13,504
265/75 R 22.5 - 10.433070 - 14,606
295/75 R 22.5 - 11.614173 - 16,260
295/80 R 22.5 - 11.614173 - 16,260
285/75 R 24.5 - 11.220472 - 15,709

[fj12ryder]

Thank you Mod for the enlightenment. Your explanation makes sense. Thanks again.

[blt2ski]

What I believe the OP is trying to say, ie how much a DOT/SP officer will enforce a typical tire max. I'm personally not willing to believe this, per the local SP/DOT officers I have had to deal with. The 235 tire as mentioned, is 9.25" wide, but I get a max of 500 lbs per inch of tire if a single, and 600 if a dual, so 9250 on a single tire axel, or 22200 lbs, which would be lowered to the max per axel of 20K. Tire max in washington state does not matter, only the Federeal bridge law stds. which is the 500 or 600 lbs per our state law modified.

If it is 700 lb per inch of rim, then a 235 typically has a 6-6.5" rim, or about 4200-4500 per tire, or numbers on par with my quote of 9250 per axel or a bit lower.

I would not trust the above chart to be a legal amount under NO circumstances that I have had to deal with when dealing with commercial enforcement officers and max tire/axel amounts.

Marty

[fj12ryder]

That still makes no sense since it shows:

LT 235/85 R 16 - 9.2519685 - 12,953

If that is for 2 tires/axle then it shows that those 2 tires can handle 6476.5 lbs. each. I don't think so!! So far that chart is meaningless.

[sacmarata]

fj12ryder wrote:
I figured that's what it meant, but what does that mean? Wouldn't it be dependent on the number of tires on that axle? What am I missing?

Values are for two tires per axle.

[fj12ryder]

I figured that's what it meant, but what does that mean? Wouldn't it be dependent on the number of tires on that axle? What am I missing?

[BarneyS]

fj12ryder wrote:
How many tires on that axle? What does TTL LBS per axle mean?

Probably "Total Pounds per Axle".
Barney

[fj12ryder]

How many tires on that axle? What does TTL LBS per axle mean?

[i_Corky]

On my sticker inside the drivers door, it shows my GVWR of 12,210, tires: front & dual rears as LT225/75R16D. The GAWR: front 4400 & rear 7810. I don't know what it all means.

[fj12ryder]

Very confusing, to me anyway. Does that say that 2 LT 235/85 R 16 tires will carry 12,953 lbs.? Or am I missing something very obvious?