Different TIRE SIZES? - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 07-13-2010, 09:46 AM Thread Starter
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Different TIRE SIZES?

I'm running 275/65/20 Nitto Dura Grapplers....really quiet and comfortable, but the fronts rub the wheelwells during hard-over turns.

I'm thinking about getting some 275/55/20 for the fronts.

Will having 275/65 on the rears and 275/55 on the fronts cause any problems?


2000 F350XLT 2WD and not raced or off-roaded, FWIW

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post #2 of 13 Old 07-13-2010, 09:55 AM
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the only problem I can foresee is with tire rotations.

99.5 F250 ECSB

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post #3 of 13 Old 07-13-2010, 10:04 AM
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the only problem I can foresee is with tire rotations.
x2 on the rotations. Wouldn't wheels with greater backspacing be easier?
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post #4 of 13 Old 07-13-2010, 10:17 AM Thread Starter
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What's backspacing?

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post #5 of 13 Old 07-13-2010, 10:45 AM
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What are you rubbing? The inner fenderwell or the leafs?

If the inner fenderwell - the black plastic behind the tire - just zip tie it back out of the way. If the leafs - well then yeah - live with it - change the backspace - or different width tire.


'03 6.0 F250 FX4 Supercab Longbed 4wd <>< - SOLD


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Full DIY ERG delete, Zoodad Mod, 5R110
ARP studs!!! and Decked Heads, Autometer EGR & Glowshift EOT, ECT, Boost
18x9 Black DC-2 and LT295/70R18E Nitto Terra Grapplers
www.lighthousemissions.org & www.shutterupandsmile.smugmug.com
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post #6 of 13 Old 07-13-2010, 12:15 PM Thread Starter
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Originally Posted by X JBM X View Post
the only problem I can foresee is with tire rotations.
Only one rotation before the rears would need replacing, and then go with the 55 aspect all around.

I don't see a problem with the 55s on the rear and the 65s on the front, do you?

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post #7 of 13 Old 07-13-2010, 01:14 PM
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Originally Posted by bamaboy473 View Post
Only one rotation before the rears would need replacing, and then go with the 55 aspect all around.

I don't see a problem with the 55s on the rear and the 65s on the front, do you?
Sure, if you want to look ridiculous.

But other than that, tires are meant to be rotated front to back, not left to right (for cord pattern)

So, the choice is yours. Not something I would do though.

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post #8 of 13 Old 07-13-2010, 09:26 PM
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DO NOT stager tire sizes..i highly do NOT recommend this. it will actually bind up a transfer case..ive seen them wreck at work, also ive seen diffs pile in due to stagered sizes..iit screws with everything..

just get the stock tire size or just buy spacers..

05+ coils, 10 Rear diff, box, tailgate, lights, bumper, Full 07 front harley swap...the list is endless.

AS IM RARLEY on here anymore...have a question ?? EMAIL ME dakinbryce@hotmail.com..ill gladly answer any of your questions. OR search me on facebook. ill help out anyway I can !

updated as of OCT 28/2013
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post #9 of 13 Old 07-14-2010, 04:27 AM Thread Starter
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Sure, if you want to look ridiculous.
So, the choice is yours. Not something I would do though.

Well, looking ridiculous has become real easy for me as the years roll on, so that's not a problem

Guess I'll have to stop by a tire store, because I'm thinking that there can't be much more than 1/2" height difference between the 65 and the 55 series, so it would take a hell of a trained eye to even spot it...or am I missing something?

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post #10 of 13 Old 07-14-2010, 04:37 AM
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Originally Posted by bamaboy473 View Post
.... because I'm thinking that there can't be much more than 1/2" height difference between the 65 and the 55 series, so it would take a hell of a trained eye to even spot it...or am I missing something?
Your missing something. Typically the difference isnt 1/2". On truck tires - the difference is usually 2+ inches! An example, generally speaking, a 325/60R18 is a 33" tire. A 325/65R18 is a 35" tire. That "little 5" makes a big difference.

Have you by chance looked at the Nitto Tire Website for the Dura Grappler - it answers your questions on height without guessing

The 275/55R20, load range 117H (not much) and is 31.89" diameter.
The LT275/65R20, load range 126R (alot) is 34.05" diameter.

Check it out for yourself. Nitto Tire - High Performance Tires for Car and Truck Enthusiasts


'03 6.0 F250 FX4 Supercab Longbed 4wd <>< - SOLD


225,518miles!
Diamond-Eye 4" Off-road turbo-back
Full DIY ERG delete, Zoodad Mod, 5R110
ARP studs!!! and Decked Heads, Autometer EGR & Glowshift EOT, ECT, Boost
18x9 Black DC-2 and LT295/70R18E Nitto Terra Grapplers
www.lighthousemissions.org & www.shutterupandsmile.smugmug.com
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