YT359/347 front R4 tire height

[KeithT]

I’m thinking about getting an extra set of R4 front wheels and tires to use when conditions are dry and I’m doing a lot of loader work. Right now I have R1’s. The R1’s measure 31 inches tall. Just curious what the R 4’s measure? And whether it would be a direct replacement.

 

[freightboy]

On the YT3 tractors, the R4 tires offered by Yanmar should be programmed to the 610 mm size in the instrument cluster. R1 are 625, R3 are 570. Failure to change this setting will have your settings off for ground speed. Might not seem like a big deal until you consider the benefit of being able to set precise speeds.