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Hi Everyone =) I have a tire question


Ranger850

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Without looking at the exact specs on a tire size calculator, the difference is one is in metric measurements and the other in inches. This is assuming you are looking at the same make and model of tire.
So, nothing. Nothing is different. You could have just said "Nothing."
 


97RangerXLT

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Superj probably has the best advice on that. But it likely had Firestone All terrain tires as Ford had a business deal with them

And yeah, spare tire is junk, replace it

AJ
 

rusty ol ranger

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Firestone radial ATX IIRC.

Theyve been discontinued for years
 

don4331

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GoodYear Wrangler RT/S were common on 4x4s,
General Grabber AP, and aforementioned Firestone ATX.
 

rusty ol ranger

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GoodYear Wrangler RT/S were common on 4x4s,
General Grabber AP, and aforementioned Firestone ATX.
Dodge ran goodyear. GM ran general, Ford the firestone
 

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So, nothing. Nothing is different. You could have just said "Nothing."
Not necessarily. The best answer I can give you is it depends. Too many variables. If the tires were true to spec, the metric would be slightly smaller but they are rarely true to spec.
 

Ranger850

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Not necessarily. The best answer I can give you is it depends. Too many variables. If the tires were true to spec, the metric would be slightly smaller but they are rarely true to spec.
I guess my question is not "What's" the difference, but "WHY" is there a difference in the way one is sized in inches, and the other is sized in the "normal" way.
 

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I guess my question is not "What's" the difference, but "WHY" is there a difference in the way one is sized in inches, and the other is sized in the "normal" way.
Your guess is as good as mine. Carry over due to old trucks and preference of off road drivers?
 

Ranger850

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Your guess is as good as mine. Carry over due to old trucks and preference of off road drivers?
From what I can gather from the series of tubes is that "flotation" tires are measured in inches. They are designed to "float" over loose soils. So even though they are the same size (basically) they are built for different purposes. Metric tires are for pounding pavement, mostly, and flotation tires are for loose soils like sand and gravel.

.
 
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don4331

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From what I can gather from the series of tubes is that "flotation" tires are measured in inches. They are designed to "float" over loose soils. So even though they are the same size (basically) they are built for different purposes. Metric tires are for pounding pavement, mostly, and flotation tires are for loose soils like sand and gravel.

.
I would have said there are off road tires that exceed 2 digits for aspect ratio e.g. 34x9.5R15 would be 240/100R15 and the metric momenclature isn't set up for them. Part 2 of that is the off road tires were "advertising" their diameter, when your "normal" tire was a 8.15-15 (What the old man's '68 F-100 came with as opposed to the H78-15 that I installed).

The letter nomenclature tire sizes varied radiacally between manufactures, so the diameter x width letter rim diameter was US combating the rest of the world's nomenclature. They did at least win the rim diameter - 315/340/365/390/415 rims were flash in the pan.
 

rusty ol ranger

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