Z421 Wheel Change

[WDF]

I bought a new z421/54" deck this spring for a good price. One of the reasons I chose the z over competing makes was the larger wheel and tire size, it has 24x9.5x14 rear wheels. I noticed when cutting that my grass is showing signs of compaction as we have sand soil here. The 60" deck mowers have a rear tire size of 24x12x14, and the dealer says the wider tires will reduce compaction.
I can change the rears for $700, will the extra 2.5" width make any difference?

 

[Steve67]

That price seems high. I know I’m not comparing apples to oranges but I just paid $1100 for a set of 4 Michelin defenders installed on my truck. You should talk to the salesperson and not the parts guy

 

[KevincMD]

I believe you will really like the wider tires/wheels. I have a Z421-54 and I ordered the wider units pre-COVID, when things weren't so crazy priced. They are awesome on wet ground. I also put the wider tires/spindles on the front. I sold my other rear set and made back a lot of my investment. They make a difference and leave no trenches.

 

[WDF]

Thanks I would think so as well. For now I lowered the PSI down to 6 (from 12).
I'll probably go ahead and order wider wheels if I can find a set at a good price.

 

[Code]

Bringing up an old thread but i just got 2 flats in sidewalls of my z421 (stupid past owners have barbed wire all over).
Where are you guys looking and getting tires? My google fu is not helping much besides kubota dealers

 

[kevinc]

That’s a good question! I like the wide tires, but they’re not popular where I’m shopping. I guess I was planning on ordering them through my dealer or Messicks wheeler the time came. I haven’t sent them on other websites.

 

[WDF]

I never bought them. Not spending $700 for better mower rims.
Although if you want to work out a deal maybe ill relent

 

[Mowbizz]

I have the Z422 with the narrower tires and suspension seat. After 20 or so hours of mowing this summer the narrower tire (54” deck) are working out fine. I have some hills and my worry was lack of traction but the tires have done everything I have asked them to do. Love my Z422-54! Sandy soil here as well but with good drainage. For $700 to upgrade, I’m glad I stayed with the originals.