When we are traveling with our 5<SUP>th</SUP> wheel in tow, our trucks LT245/75R16E rear tires are loaded to their maximum rated load of 3042# at 80psi. If we carefully maintain the air pressure are we asking for tire problems?<O:p</O:p

We’ve considered moving up to LT265/75R16E’s that are used on the new one ton SRW GM trucks but doing so requires getting wider wheels and we would loose some pulling power. Since we’re pulling almost at the truck’s rated GCWR of 22,000#, loosing pulling power is not very appealing.

hmmm, not sure where youre headed on this one - myself and alot of other tow quite a bit on even bigger tires and dont have any problems both stock and aftermarket. I have 35's, run a suncoast stage 3, and some aftermarket programs and have no problems towing anything in any condition

hmmm, not sure where youre headed on this one - myself and alot of other tow quite a bit on even bigger tires and dont have any problems both stock and aftermarket. I have 35's, run a suncoast stage 3, and some aftermarket programs and have no problems towing anything in any condition
Apparently, Demaxter is running bone stock (engine wise) with no tuners and he is wondering if the increased diameter (less RPMs) of bigger tires will effect his towing ability. This is a concern as he is right at the max for his rig. First, if you are running the recomended tire size, you are at or slightly under GVWR for your truck, and you maintain proper tire inflation, I don't think you will have any problems. However, if you are looking for a good excuse to go to a larger size tire :D , then you may experience a slight decrease in performance, and I mean slight. The bigger concern will come if the PCM isn't calibrated to account for the tire size change. This will be more detremental to your performance than the increased tire size...in my opinion of course.
JP

I would love to put bigger shoes on my truck.........

The only problem is that I already have clearance issues between the 5'ver and the bed rails...... If I changed to 265's I'll lose another 1/2".....

Until I get a 5'ver that has a taller front section I'm stuck with the 245's:mad:

Deamxter, My own experience with long distance heavy hauling is the 235-85-16 Toyo M-55 is hard to beat for mileage and longevity.

Or a Michelin LTX-AT 235-85-16.

Just my .02

Until I get a 5'ver that has a taller front section I'm stuck with the 245's:mad:
I believe that trailer hitch boxes can be adjusted to allow for more clearance. Not sure how it is done, but I was told when I bought my 5ver that if I had clearance issues it could be adjusted. Might wanna talk to your local RV dealer and see if he has any options, although it might be expensive just to run larger tires. Know what I mean?
JP

The tire manufactures put the load ratings on these tires to give the consumer a safe range to work with.
A crane can have a 5 - 1 safety factor in it. I am sure the tires have somthing similar.
Look at your tires closely. The larger you go more than likely they are not rated for the loads that your truck was designed for. I put 285's on mine and they are a not E load rating. I am almost positive they do not make an E load rating for 35's. Just make sure before you buy them for what you have in mind.

most 35's are D Rated, good for 3100 lbs each

When we are traveling with our 5<SUP>th</SUP> wheel in tow, our trucks LT245/75R16E rear tires are loaded to their maximum rated load of 3042# at 80psi. If we carefully maintain the air pressure are we asking for tire problems?<O:p</O:p

We’ve considered moving up to LT265/75R16E’s that are used on the new one ton SRW GM trucks but doing so requires getting wider wheels and we would loose some pulling power. Since we’re pulling almost at the truck’s rated GCWR of 22,000#, loosing pulling power is not very appealing.
So your combined tounge weight over the rear axle including the truck is over 6084lbs??:eek: I would check your weights again because if this is true you will have much bigger problems to worry about than your tires. IT doesn't matter how much your trailer weighs only the weight over the axle.

I did not take the time to look it up but I do not think you will gain any load rating by changing tire size. In fact tire size has nothing to do with load ratings. Yet some sizes are only avaliable in certain load ratings like akdiesel mentioned.

I think you will be fine with what you have. Like you mentioned I would carefully monitor your PSI and keep it at 80 to ensure your tires do not overheat.

The Goodyear G614 is available in one size only, 235/85/16. It is load range G, rated at 3750 lbs at 110 psi. It is listed as a trailer tire, but seems like it would be fine on the drive axle. The link is below.

http://www.goodyear.com/cfmx/web/truck/line.cfm?prodhiercode=pickup&prodline=007209&prodline_name=G614%20RST

I appreciate all the responses. I guess I wasn't taking into consideration the safety factor used in tire design, so it appears that if we carefully maintain tire pressure and what we take with, we shouldn't have a problem.

The Original Diesel,

We're not over 6084# on rear axel, but we're close. When we weighed while on our last trip we were at 5920# with both fuel tanks full, about 50 gallons of water in trailer's fresh water tank and both propane tanks full.

Note: LT265/75-16E tires, size used on new 1 ton SRW, are rated at 3415# max. at 80 psi.

one thing you have to remember is that you generally dont have all that weight over the axles, the tongue weight is what you have to look at and take into consideration as that is the weight directly on the back end of truck - maybe i misunderstood something there ?

Opps, I forgot to mention that we pull a large 5th wheel trailer.

With the the 245 /75 /16 at 80 psi E rating I have a solid and stable ride while towing, the tires do not float or squirm in the wind or on curves, if you put a larger tire on the truck you may find that the truck starts rolling from side to side (floator squirm) not to pleasant or safe.

just a thought

don't forget the new rimes have to be rated for the maximum tire pressure you intend using, many arn't.

good luck

whats the front end weight - it should be listed on the unit itself, and that should tell you what your putting on the axles

I just converted to Michelin LTX M&S 265/75/16 E's on Alcoa 16 by 7 Classics for that very same reason. Rims are rated for 3750 lbs each, and the tires good for 3415 lbs each. My rear axil with 5ver, fire wood and family was also at 6100ish. Now I have a little more safety margin. I also have a mfg recommended rim width for the 265's.
I still haven't heard what the stock PYO's are rated for. The far majority of the one piece forged aluminum rims are rated for 3100 or 3200 lbs.

Damn you guys load these trucks down:eek: . A dually might be a good option:D

If the max load is what your looking for try this link

http://www.ricksontruck.com/tires_24570R195.html

This is for 245/70/19.5 tire

The load max is something like 4540 well above 3042 that your currently have....

Pete

Damn you guys load these trucks down:eek: . A dually might be a good option:D
No different than a SRW3500 rated for 9900 lbs. Maybe mine is better.
Thought I heard the SRW3500 still came with 6.5 inch wheels, which is not recommended by any tire manufacturer for a 265 tire.
Can anyone confirm?

I have the 225/70R/19.5 and they work great!:ro)

There is minimal sidewall flex when loaded, and about 2"taller than the stockers, I have no problem at all with the power, pulls my 40' trailer great.
They were a bit pricey but the added safety is well worth it.
Pulled over 5,000 miles this year, will be putting the stockers back on this week.

I appreciate all the responses. I guess I wasn't taking into consideration the safety factor used in tire design, so it appears that if we carefully maintain tire pressure and what we take with, we shouldn't have a problem.

The Original Diesel,

We're not over 6084# on rear axel, but we're close. When we weighed while on our last trip we were at 5920# with both fuel tanks full, about 50 gallons of water in trailer's fresh water tank and both propane tanks full.

Note: LT265/75-16E tires, size used on new 1 ton SRW, are rated at 3415# max. at 80 psi.I am still thinking you may be confusing trailer weight with tongue weight. If the trailer weight is 5920 then your tongue weight is typically 10% of that. If your tongue weight is 5920, you are telling me your trailer is in the range of 59,000 lbs, or 30 tons? Doubt it. What is your trailer weight and what is the tongue weight? SPICER

yeah, i agree - my buddies and i all pull toy haulers, some trailers, some 5vers, and you have to look at tongue weight only to get your true weight for the axles. my buddy just picked up a 39 foot, 5ver, toy hauler - a big SOB, and its fine, granted we put air bags on, but still within specs on weight for truck, axles, wheels, and tires

Spicer, I think he's talking about weight on the rear axle when everything is loaded.

5920 on the truck's rear axle would not be out of align with a big 5'ver

Just for the record.....and so I can keep up::o

Tongue weight = the weight applied to the rear axle via hitch located outside the truck bed, i.e. bumper or receiver hitch (travel trailer).

Pin weight = weight applied to the rear axle via hitch located inside the truck bed, i.e. 5th wheel or goose neck type trailer.
JP

Demaxter, Have you weighed your loaded truck/trailer at some scales? It is a good thing to do. I would think, like me, your close to the max on king pin weight for a 2500. If you're real concerned maybe its time to look at a 3500.

When we weighed while on our last trip we were at 5920# with both fuel tanks full, about 50 gallons of water in trailer's fresh water tank and both propane tanks full.

Bluemax, he stated this earlier which I assumed was on a scale......