? on tires on a dually - Diesel Forum - TheDieselStop.com
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post #1 of 4 (permalink) Old 09-11-2006, 08:41 PM Thread Starter
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? on tires on a dually

im new here and i just bought this truck for my wife its a 1999 f350 4x4 4 door dually with a choo choo custom package on it and a lot of banks stuff my ? is what tires should i be running the sticker on the door from choo choo says front 235/85/16 rear 285/85/16 but whats on the truck is 265/75/16 front rear 255/85/16 what should i buy the front ones are new now i dont want to do any thing to my transfer case
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post #2 of 4 (permalink) Old 09-11-2006, 10:46 PM
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Re: ? on tires on a dually

Stock size on a '99 F-350 Dooley 4x2 was LT215/85R16. LT235/85R16 was optional.

Stock tire size on a '99 F-350 Dooley 4x4 was LT235/85R16.

The biggest tire that will legally fit on the stock 6" wide wheels is LT235/85R16.

The LT255/85R16 will go on the wheels and seem to be okay on the road, but they require 6.5" wide wheels per all the tire makers and the Tire&Rim Assn.

The LT 265/75R16 requires 7" wide wheels. They are std on most F-350 SRWs that have stock 7" wide wheels. But they are too wide for stock 6" wide wheels on your Dooley.

The LT285/75R16 is way too wide for those stock 6" wheels. They require wheels at least 7.5" wide.

What to do?

If you want the best tire on the market, get Michelin XPS. The biggest size they come in is LT235/85R16 - made specially for your pickup. [img]/ubbthreads/images/graemlins/warmsmile.gif[/img] And mine. [img]/ubbthreads/images/graemlins/cool.gif[/img] But not cheap - probably over $200 each if you need the Traction tread.

If you want the longer legs of a slightly taller tire and don't mind fudging on the wheel width issue, then buy LT255/85R16. Made by BFGoodrich MudTerrain, Cooper Discoverer, Dunlop Radial Rover and a coupla others.

And BTW, put the same size tires front and rear if you ever use 4x4. [img]/ubbthreads/images/graemlins/shocked.gif[/img]

My Sierra Blanca in the sig pic was a great pickup for 11.5 years. I sold it a coupla years ago. I drove a hand-me-down 2003 F-150 SuperCrew 4.6L 2V for a while, but it was unacceptable for towing more than a rowboat. Replacement is a 2012 F-150 EcoBoost SuperCrew Lariat that tows my 5,000-pound TT like a dream.
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post #3 of 4 (permalink) Old 09-12-2006, 07:16 AM
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Re: ? on tires on a dually

I have the LT235/8516 in the Michelin LTX M/S and with 10K on them they still look brand new. Many are getting 80K + out of these tires.

2000 Ford F350 4X4 Auto,Crew Cab Lariat, Western Hauler Package, Long bed,
Isspro EV Guages on A-Pillar, Coolant change from Green to Gold to Red,
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post #4 of 4 (permalink) Old 09-12-2006, 10:14 AM
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Re: ? on tires on a dually

You could leave the new 265/75 front tires alone and put 235/85 on the back. They are both the same OD at about 31.7" so the RPMile is the same.
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