Seeking Advice on tire size

[dermocarroll]

I have a 1987 Deutz 4.70 with Quickie front end loader. Tire size;
Front 14.9R24
Back 18.4R38
one front tire not in great order so sourced 2 replacements 13.6R24. Will the difference in size cause strain on drive train? Hoping that it won't but unsure. Anyone have knowledge in this area?

 

[jake98]

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[Ford tractor]

I have a 1987 Deutz 4.70 with Quickie front end loader. Tire size;
Front 14.9R24
Back 18.4R38
one front tire not in great order so sourced 2 replacements 13.6R24. Will the difference in size cause strain on drive train? Hoping that it won't but unsure. Anyone have knowledge in this area?

13.6x24 is 139" rolling circumference
14.9x24 is 145"

That will change the ratio front to rear fairly significantly (4wd). Typically, 4wd tractors have the fronts running faster than the rears. The tire change will reverse that or make it neutral. Not good for pulling hard or cornering. Do a search here for details on "run out".

 

[magicheater]

13.6x24 is 139" rolling circumference
14.9x24 is 145"

That will change the ratio front to rear fairly significantly (4wd). Typically, 4wd tractors have the fronts running faster than the rears. The tire change will reverse that or make it neutral. Not good for pulling hard or cornering. Do a search here for details on "run out".

Although you went narrower which is contrary to what I do when having a tractor with a loader, Ford tractor is right. You need to keep the ratios the same as what came from the factory. I went through this with 2 tractors and ended up getting different front rims both times because there were no suitable tire options that matched the ratio needed. Good tire stores have books that give all the stats for their tires. I am partial to Firestone but that is me............