tire sizing

RedGreenGuy · Jul 9, 2020

Have Ford 3400 with 16.9 x 24 tires. Have chance to get 18.4 x 24. Any chance they will fit my rims?

shaun wallace · Jul 9, 2020

It already has tires that are 2 sizes too big so why not just go for 3 sizes too big. It will have a lot of bulge with not much tread on ground unless run flat

buickanddeere · Jul 9, 2020

(quoted from post at 17:35:43 07/09/20) Have Ford 3400 with 16.9 x 24 tires. Have chance to get 18.4 x 24. Any chance they will fit my rims?

Not unless you measure the width of the rims and tell us .

Fordfarmer · Jul 9, 2020

Unless you're going to be near the maximum weight the tires are rated to carry, you can usually go one size wider or narrower than what is meant for the rim... IF you're using bias tires.
A 16.9 would normally be mounted on a 15" wide rim, and an 18.4 would normally be on a 16" rim.
Be aware that this will add about 1" in height, as well. (Taller sidewalls)

RedGreenGuy · Jul 9, 2020

Thank you for the information. I have a backhoe I intend to add to tractor and thought it might give more support. I'll just stick with current tire size.

SVcummins · Jul 9, 2020

Went from a 15.5.38 on a 14 inch rim to a 480:80/38 which is a half inch wider than an 18.4.38 on a 14 inch rim didn’t have any issues and I don’t run em flat

rew1953 · Jul 10, 2020

(quoted from post at 18:35:43 07/09/20) Have Ford 3400 with 16.9 x 24 tires. Have chance to get 18.4 x 24. Any chance they will fit my rims?

I have a BIL who has been in the tire business for 45 years. His rule of thumb is 1 inch over or under the rim size. His experience is mostly with passenger tires, although he does sell a few tractor tires during the year, mostly fronts.

I asked if it really made a difference with the low speed tractor tires. His comment was probably not, but he refused to budge on the store policy. He will not mount any tire exceeding the 1 inch rule, mostly due the liability issues.

If you want a wheel combination larger than the rule allows, he will gladly sell you the tire, but you are on your own to mount it.

I have always done my own tractor tires, and it is not a real problem. It takes a little patience, but can be done easily with the right hand tools. I made my own spud bars which work well.

tire sizing

RedGreenGuy

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shaun wallace

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buickanddeere

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Fordfarmer

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RedGreenGuy

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SVcummins

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rew1953

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