Tractor tire size calculator
Compare tire sizes and find the right replacement!
Original tire
Enter the dimensions of your current tire
Another size
Enter the size of the replacement tire you are considering
How to interpret the results:
Our advanced agricultural tire calculator is an essential tool for every farmer and construction equipment operator. Are you wondering if a new set of tires will fit your tractor, combine, or loader? Do you want to avoid costly mistakes and drive issues? Use our free tool!
The calculator allows you to quickly compare two tire sizes. Simply enter the tire specifications, and our system will automatically calculate and compare parameters such as:
- Overall tire diameter
- Tire circumference
- Tire width
- Tire aspect ratio
The results are presented in millimeters, which allows for precise comparison and assessment of the differences. Additionally, the calculator will show the difference in the actual machine speed at 40 km/h after changing the tires, which is important for proper 4×4 drive operation.
Our farm tire calculator supports all popular tire marking systems:
- Metric (e.g., 480/70R38)
- Imperial (inch) with aspect ratio (e.g., 12.5/80-18)
- Imperial (inch) without aspect ratio (e.g., 16.9-30), for which the aspect ratio is estimated automatically.