Tire sizing systems
Lawn Tractor and Mower Tire Sizes: Markings, Charts and Dimension Comparisons
How to read lawn tractor and mower tire sizes such as 20x8.00-8, with a size chart, simple diameter and circumference calculations, and the limits of size comparisons.
Metric Tractor Tire Sizes: How to Read, Convert and Compare Them
How to read metric tractor tire sizes such as 480/80R46, convert them to inch sizes, and calculate sidewall height, overall diameter and circumference.
Can a Spare Tire Be a Different Size From the Other Tires?
Why a temporary spare can be narrower or sit on a different wheel size, how to read its sidewall markings, and how to compare overall diameter and circumference.
How to Convert Inch and Flotation Tire Sizes to Metric
Convert flotation and inch tire sizes such as 33x12.50R17 to metric equivalents. Includes step-by-step formulas, 33, 34 and 35 inch charts, and the limits of calculated sizes.
Tractor-Trailer Tire Size Chart Explained: How to Read and Compare Semi Truck Tire Sizes
How to read semi truck tire sizes such as 295/75R22.5 and 11R22.5, calculate diameter and circumference, and understand the limits of size comparison charts.
ATV and UTV Tire Size Chart, Calculator and Conversions: How to Read and Compare Tire Sizes
How to read ATV and UTV tire sidewall numbers, convert metric and inch sizes, calculate sidewall height, diameter and circumference, and compare sizes.
Tractor Flotation Tire Sizes and Dimensions: Reading the Sidewall Numbers
How to read tractor flotation tire sizes such as 600/65R38, 31x13.50-15 and 21.5L-16.1, calculate overall diameter and circumference, and understand the limits of fitment.
Commercial Truck and Bus Tire Sizes: Common Sizes and Their Dimensions
How to read commercial truck and bus tire size markings, with calculated dimensions for 10 common sizes, off-road sizes and the limits of size comparisons.
ATV Tire Chain Size Chart: Reading Tire Sizes for Chain Fitment
How to read ATV and UTV tire sidewall sizes for chain fitment, with a size chart of calculated diameter, width, sidewall height and circumference, plus clearance checks.
Pickup and Light-Truck Tire Size Charts and Conversions: Reading the Sidewall Numbers
How to read LT-metric, P-metric, flotation and older truck tire sizes, convert them to inches, compare overall diameter, and understand what the calculations cannot show.