tire question

kennell · Jul 6, 2014

There is a 380-80x38 tire for sale cheap on the classifieds near me. What size is that in normal English? All i understand is the 38 part. LOL Kent

D- · Jul 6, 2014

If they are near you call the guy.
I've had tractors w/metric measurements but don't remember the numbers. Sorry no more help.

IAtractorKid · Jul 6, 2014

380/85R38 is a 14.9x38 so the 380/80R38 is going to be about 2" shorter in diameter than a 14.9

Robert Major · Jul 7, 2014

Hi Chances are unless you got an exact match for it you won't want it. Have seen a few tractors with say a 16.9 38 on and a metric equivalent. They can be miles apart in specs between the 2 sizes, and even different tire makers won't match either sometimes . that can throw the differential ratios out pretty good due to rolling radius being out, and can cause some real good damage to the drive line.
Be careful.
Regards Robert

mkirsch · Jul 7, 2014

It's just like a car tire.

First number is width in mm. Divide by 25.4 to get inches.

380mm / 25.4 = 14.96"

Second number is sidewall profile in % of width.

Don't ask me why or how they came up with that scheme.

tire question

kennell

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D-

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IAtractorKid

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Robert Major

Well-known Member

mkirsch

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