The Toro MX4250 is a ZT ride on mower (riding mower).
A recent inspection at 220h revealed that rear tyre wear is uneven (as would be expected for this type of application), tread depth inside to outside was 1.5/2.5mm and 1.8/2.6mm.
To wring a little more life out of the tyres, they were reversed on the rims, and rotated left to right.
Small diameter wheels, especially wide ones can be difficult (these are 18×7.50-8 tyres), but these were much easier than the front castors which needed tubes inserted when the mower was quite new.
Above, a Bead Cheata was used to break the bead. On one side of the wheel, the bead needs to be forced down more than 50mm, the other side is easier. Beyond that, tyre levers were sufficient. I used a little mounting lube on the beads to remount the tyres, that makes the job a lot easier. The tubeless tyres reseated for inflation pretty easily, a few bounces of the wheel and they inflated just fine.
Some of the wheel nuts needed a breaker bar to loosen them. Though they did not show signs of severe corrosion, corrosion was probably a contribution to the problem. The wheels get wet in use, and so corrosion is a risk. It appeared that the studs were galvanised,
Much as I strongly dislike departing from manufacturers recommendation on lubrication of wheel studs, I did apply anti-seize and tightened the wheel nuts to 65Nm, reduced from the 100Nm recommendation and labelled the wheel caps for people who later work on them.
I captioned this article a “mid life” kicker, but I expect the tyres have give 75% of their life, I might get another 70h running before the grip is insufficient for the higher slopes on parts of the block. Replacement Toro tyres are quoted at $600 per pair, after-market are lower… so there is reason to get full use from them.