????? Question About Tire Pressure ?????

[rockwood06]

The question I have is setting the tire pressure on all four tire for a 5 th wheel.

Now when I was towing a TT with a Reese WDS Contol Hitch System I would set the tire pressure on all four tires at max pressure that was listed on the tires and in this case it was 80 psi (load rated "E" 10 ply).

Do I do the same with towing a 5th wheel or just increase the rear tires, now this could be a silly question but my thinking is this, since the Reese WDS contol hitch system places more weight to the front of the tow vehicle I can see the reason of all four tires to be the same , but now with the 5th wheel most of the weight in on the rear how should I do this??? thanks in advance

[ependydad]

Technically, the right answer is that you take your truck to the scales, get both axles weighed and then adjust tire pressure from there.

For me, I run at max. :-) I'd love to hit the scales, I just haven't been able to yet.

[rockwood06]

[QUOTE=ependydad;296807]Technically, the right answer is that you take your truck to the scales, get both axles weighed and then adjust tire pressure from there.

For me, I run at max. :-) I'd love to hit the scales, I just haven't been able to yet.[/QUOTT

Thanks for the feed back, so I take it if I go with max pressure I will be ok until I get to the scales

[Sirsea]

I always run max (80 PSI) in truck and trailer tires; and use a TPMS on the trailer which shows PSI & temp. Likewise about weighing the rig; know I should do but just have not made the effort since only time I hook up is to go camping.

[rockwood06]

Originally Posted by Sirsea

I always run max (80 PSI) in truck and trailer tires; and use a TPMS on the trailer which shows PSI & temp. Likewise about weighing the rig; know I should do but just have not made the effort since only time I hook up is to go camping.

I quess the only way I can weigh it is when I leave for Georgia to see my son before he ships of to Afgh for a year and stop somewhere on I-95 at a truck scale.....thanks for your reply.

[SYE]

I run 80 PSI in all 4 tires. I also run 80 in my rear tires on my truck and 50 in the front. (GM Specifications). You are towing na lot of wirgh probably close to max allowed for each tire so I would run max, you are not going to hurt antthing if you do. (80 PSI Max is for Load Range E Tires).

[rockwood06]

Just last weekend I replaced my tires and installed "E" rated tires and I even chanced out the spare and I just sold the 5 tires I just toke off my truck so I should be good to go, thank to all.

[Dave_Monica]

I know that you're towing with a half ton. Good to see that you've replaced the P metric tire with LT metric load range E. Thought the max air pressure in the tires is 80 psi, I doubt that the rims will be rated for that, most likely 65 psi. I believe that the max air pressure should be stamped on the backside of the rim.

Dave

[camper1999]

Gm recommends 75 for the rear and 60 in the front on my 2500 sierra. I go with 80 and 65. Gm's recommendation will cover up to the gross weighting of the truck. Putting to much air in the front could reduce traction for the overall handling/streering/control

[SYE]

Originally Posted by Dave_Monica

I know that you're towing with a half ton. Good to see that you've replaced the P metric tire with LT metric load range E. Thought the max air pressure in the tires is 80 psi, I doubt that the rims will be rated for that, most likely 65 psi. I believe that the max air pressure should be stamped on the backside of the rim.

Dave

When I worked at GM Tire and Wheel Systems in Milford Mi. the max air pressure was indeed stamped on the inside edge of the wheels.

[rockwood06]

Originally Posted by Dave_Monica

I know that you're towing with a half ton. Good to see that you've replaced the P metric tire with LT metric load range E. Thought the max air pressure in the tires is 80 psi, I doubt that the rims will be rated for that, most likely 65 psi. I believe that the max air pressure should be stamped on the backside of the rim.

Dave

Dave, thanks I will check on that in the morning, you know there are so many things to know and so many questions to ask but if don't know what you need to know then how does one come up with the questions to ask???? Dave, Do you know where I am coming from?

[Jimtc]

Originally Posted by rockwood06

The question I have is setting the tire pressure on all four tire for a 5 th wheel.

Now when I was towing a TT with a Reese WDS Contol Hitch System I would set the tire pressure on all four tires at max pressure that was listed on the tires and in this case it was 80 psi (load rated "E" 10 ply).

Do I do the same with towing a 5th wheel or just increase the rear tires, now this could be a silly question but my thinking is this, since the Reese WDS contol hitch system places more weight to the front of the tow vehicle I can see the reason of all four tires to be the same , but now with the 5th wheel most of the weight in on the rear how should I do this??? thanks in advance

All 4 tires @ 80psi for me.

[Herk7769]

Hard to tell (at least to me) from the Original post if we are talking about the truck or the camper.

Tire pressures are one of the most heavily discussed areas of the forum and many threads exist here about them.

Running max sidewall pressure may be "safe," but overkill and may lead to handling problems when the truck is empty (or not towing) due to tire bounce.

Only knowing what each axles weighs and adjusting the pressures regularly for your actual implementation will you have optimum ride and even tire wear.

As always tire pressure per axle should always be the same. If an axle's weight bearing shows that one tire on that axle is supporting a weight requiring 75 PSI and the other tire on that axles has a load requiring 65 PSI, then both tires must have 75 PSI.

For trucks, if the front axle needs 65 PS and the rear axle is supporting a load that needs 75, then that is how they should be inflated; regardless of sidewall. You should also never have less than your pillar pressures.

[Jimtc]

Originally Posted by rockwood06

The question I have is setting the tire pressure on all four tire for a 5 th wheel..................d

My above comment pertains to 5er TP which is the OPs question.(?)

[Slugger]

Went from a 5th wheel (max pressure) to a 26ft bumper pull-I know that I use max for TT but what about the Ram 3500. Do I use the same as the 5er?

[ependydad]

Originally Posted by curtlcoffee

Went from a 5th wheel (max pressure) to a 26ft bumper pull-I know that I use max for TT but what about the Ram 3500. Do I use the same as the 5er?

The easiest answer is - yeah, just go with max and don't worry about it.

The slightly more debated answer is - go get it weighed and then use the load table from the tire manufacturer for the load on those tires.

[OldCoot]

When I tow, I go to max pressures on truck & trailer and when using the truck without the trailer or a load I go to 35# front & rear.

[Slugger]

Originally Posted by OldCoot

When I tow, I go to max pressures on truck & trailer and when using the truck without the trailer or a load I go to 35# front & rear.

Good info&thanks