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View Full Version : Tires almost rubbing on F350 Dually when hitched


Winmagbar
05-03-2016, 12:23 PM
Hello,

Just purchased a 2003 Montana 3760 in excellent condition. On the initial pull home, I noticed my tires in back were almost touching with maybe a quarter of inch or less of space between the tires. The original owner of my truck installed 235/85/16 tires which are a little over size. I am running 60lbs of air in the tires. My question, can this problem be alleviated by running 80lbs of air or is that abnormal when towing and will generate a harsh ride. Or should I just go back to stock tires? My current tires have good tread but the last thing I want to induce is a blowout. Please advise.

Thanks

Robert

jcurtis934
05-03-2016, 12:53 PM
Knowing the year of the truck would help, but you should be able to tow with the reccomended tire inflation per the label on the door jam. Tires almost rubbing in the back sounds like severe overload of the truck. My 2012 has about a foot of clearance and the pin weight of our monty only pushes our truck down 3 inches or so. John

mhs4771
05-03-2016, 01:09 PM
You could look into a spacer to install between the wheels. Used by those folks that up size tires on a Dually to maintain proper spacing between the Duals

Winmagbar
05-03-2016, 02:39 PM
Sorry, gentlemen, its a 1997 F350 in almost mint condition, crewcab, 80 gallon aux tank, 6 position chip, cold air intake, down pipe, 4" exhaust,etc. the prior gentlemen had it rigged for towing but only has 140K on the clock. The truck hardly sits down if any when the Monty is hitch up. I think it is the oversize tires. What pressure are most of you running in your tow rig tires?

Thanks

Robert

Dam Worker
05-03-2016, 02:40 PM
I would think that dually tires that are that close would make the tires more susceptible to heat problems. That is the reason for the lower load rating on tires when used in a dually configuration.

Tom Marty

Phil P
05-03-2016, 03:31 PM
Hi

I am maintaining a 1999 F350.

If it is a shot bed you slider hitch has not been locked forward.

Or the hitch is mounted in the wrong place the king pin should be in front of the center line of the rear axle about Ĺ to 1 inch. Ford can give you the exact location.

Or the previous owner has changed the springs to get a better ride. LOL

The tires would have to be excessively over sized to create the condition you are talking about.

Phil P

DonandJudy_12
05-03-2016, 03:38 PM
I have installed LT235R8516E tires on 2 duallies, a Ford and a GMC- In both cases, I installed 3/8 inch spacers between the wheels- The original tire size was LT215R8516E- I also run 80 lbs of pressure as recommended by the tire manufacturer- JMHO- Don

dieselguy
05-04-2016, 03:05 AM
I think there is a bit of confusion to some here on the OP's issue. He's talking about the space between the dualls not the space in relation to the fender. I have a 2000 Ford dually and run 55 psi in the rear / 60 psi in the front. If I run 60 psi in the rear ... it wears the center of the tread noticably more. In your case, it may be the tire size ... it may be the original owner put on aftermarket wheels with less offset.
PS If I were to run 80 psi in my tires she squirms all over the road following every little ridge.

Phil P
05-04-2016, 12:11 PM
Hi

After reading the post again you are correct.

He got a lot of advice that isnít applicable. LOL

Phil P

Winmagbar
05-04-2016, 05:10 PM
Dieselguy, you are right. It's the distance between the tires that is concerning me. I think I'll just take it back to stock tires. I think the previous owner was just going for lucks but I don't want any blowouts towing the Monty.

Robert

Winmagbar
05-04-2016, 05:11 PM
Dieselguy, you are right. It's the distance between the tires that is concerning me. I think I'll just take it back to stock tires. I think the previous owner was just going for lucks but I don't want any blowouts towing the Monty.

Robert

HOOK
05-05-2016, 04:52 AM
When tires constantly touch, heat builds from friction of the contact. If there is space, there should be no problem.

Dam Worker
05-05-2016, 03:04 PM
Hook I think tires in the dual setup are prone to heat build up even if they are not touching, that is why tires are derated for dually application. If touching then I would expect problems to arise very quickly as you head down the road.

Tom Marty

Artemus Gordon
05-07-2016, 08:31 PM
As others have said, it's tire size. My 2004 F450 came with oversized tire's the previous owner installed. Like yours, they were fine without weight on them, but min hitch weight applied the distance apart was nearly non existent . The heat build up shortened the tire life in half. I wanted same size replacement tire's and the Spacers really helped.

Winmagbar
05-08-2016, 09:38 AM
Thanks gentlemen

Replacing with stock size tires next week. What do you think about Michelin LT tires?

Robert

Rondo
05-08-2016, 06:20 PM
Had OEM Michelin's on the TV and like them a lot. I did have some faster wear but I use the truck for both towing and daily use so put on quite a few miles. Had new tires put on before heading for AZ in late January this year and had Coopers put on. I have a nephew that owns a tire business and he recommended them. He has them on his personal truck and so does my brother and they both have had no problems at all. I agree with them and really like the ride from them.

Winmagbar
05-09-2016, 06:06 PM
Rondo,

Which Michelins were you running and what model coopers have you gone to?

Robert

Winmagbar
05-30-2016, 04:05 PM
Thanks for all the advice. Mounted Michelin LTX Defenders on Sat. Went back to stock 215/85/16

Robert