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Old 12-18-2015, 05:43 PM   #1
CaptnJohn
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TP & 5ers

New to towing a 5er ~ there is some cushion on vehicle weight according to the sticker on the truck. The sticker states max tire pressure 80# rear and 65# front although they are the same size ~ new truck / new tires. When towing a 5er should tires be at near max?
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Old 12-18-2015, 05:49 PM   #2
Desert185
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I always run my LRE rear tires at 80 PSI when towing, which is the max sidewall listed TP. The fronts are usually at 65 PSI regardless of towing or not.
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Old 12-18-2015, 07:23 PM   #3
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Quote:
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I always run my LRE rear tires at 80 PSI when towing, which is the max sidewall listed TP. The fronts are usually at 65 PSI regardless of towing or not.
X2 ..... same here. Great place to start and then hit the scales and then air up accordingly.
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Old 12-18-2015, 07:51 PM   #4
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I keep mine about 5 psi below sidewall all the time. Too much trouble IMO to remember to change pressures in 6 tires depending on use. But since my truck is towing the vacation home about 90% of the time it's one less thing to do before heading out for fun.
In my case even with the bags at 10 psi, the ride is a little stiff without anything in the bed.
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Old 12-18-2015, 09:57 PM   #5
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What works for me is 80# front and back when towing. The front and back tires wore perfectly-even with 65,000 miles (before replacing) on them towing 98% of the time.
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Old 12-19-2015, 06:02 AM   #6
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I watch my tire wear very closely, I typically run 70 front and 80 rear when towing, 70 front, 65 rear empty. That keeps the tire wear even across the entire face of the tread on my truck. My last set of tires went 85k miles, the current set should go about the same based on current wear.
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Old 12-19-2015, 07:30 AM   #7
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To the OP: If you weigh your truck with and without the fifth wheel in tow, you'll find that hitching the fiver will only add about 100 pounds to the front axle (maybe not even that much). With the king pin being "almost directly above the rear axle", all of the trailer weight is pretty much "centered above the rear wheels".

So, I run 70 PSI front both towing and solo and run 65 rear (solo) and 80 rear (towing).
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Old 12-19-2015, 06:05 PM   #8
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Thanks for the answers and input. I'll be following your methods!
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Old 12-19-2015, 10:18 PM   #9
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I've got a Dodge dually with the correct tires on it. Inflated to the tire placard recommendations I'm covered up to and including maximum GVWR. So, I air my tires according to the placard recommendations. Never had a problem.
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Old 12-20-2015, 10:42 AM   #10
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Originally Posted by JRTJH View Post
To the OP: If you weigh your truck with and without the fifth wheel in tow, you'll find that hitching the fiver will only add about 100 pounds to the front axle (maybe not even that much). With the king pin being "almost directly above the rear axle", all of the trailer weight is pretty much "centered above the rear wheels".

So, I run 70 PSI front both towing and solo and run 65 rear (solo) and 80 rear (towing).
Same here. Truck apparently came with 225/85 R16 placard calls for 70 up front 65 in the back. Currently has 235/85's but. I run the same pressure.
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