15.5 and 18.4 tires

mmidlam · Apr 17, 2016

would it be a bad idea to install a 18.4 x 38 tire on a rim that came with a 15.5 x 38 from the factory?

unclemerle · Apr 17, 2016

No. People do it all the time including myself.

Fordfarmer · Apr 17, 2016

I wouldn't. I would be OK with putting a 16.9 on your rim, or a 18.4 on a rim that originally had a 16.9, but I wouldn't jump up TWO sizes.

buickanddeere · Apr 17, 2016

It's ok if you mind looking short on the backside. The 15.5 is also a short sidewall ratio, low profile tire compared to the 16.9 & 18.4 etc.

JCCWI · Apr 17, 2016

Way back replaced 15.5's on 706 IHC with 16.9's......made total difference in what I could do with the old gasser...
John

mmfan55 · Apr 17, 2016

An 18.4 will work. Need to keep air pressure down so tires Will be flat on ground.

David G · Apr 17, 2016

B&D brought up a good point, the 15.5 was an odd duck short sidewall tire designed to be a 13.6 height, 18.4 will be much taller.

vscummins · Apr 17, 2016

These 18.5 on a rim that came with 15.5.38 works fine

buickanddeere · Apr 18, 2016

(quoted from post at 20:39:59 04/17/16) These 18.5 on a rim that came with 15.5.38 works fine

Look at how much lower the rear end is than the front. By always driving uphill the tractor is wasting fuel.

BarnyardEngineering · Apr 18, 2016

15.5x38 takes a 14" wide rim. 18.4x38 takes a 16" wide rim.

It will be a JOB to pop a set of 6- or 8-ply 18.4x38 tires on to 14" rims. You can cram them on there but the treads will be bulged out and the tire will wear funny.

15.5 and 18.4 tires

mmidlam

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unclemerle

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Fordfarmer

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buickanddeere

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JCCWI

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mmfan55

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David G

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vscummins

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buickanddeere

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BarnyardEngineering

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