Tire Size 255/30R21 in inches
Below are the most common tire sizing information in inches:
255/30R21 Height - How tall is a 255/30R21 tire in inches?
This tire size is 27.024 inches tall.
255/30R21 Width in inches - How wide is a 255/30R21 tire?
This tire size is 10.039 inches wide (tread width).
What's the Sidewall Size of a 255/30R21 Tire in Inches?
This tire size has 3.012 inch sidewalls.
Other Questions About the 255/30R21 Tire Size
Here's some other common questions asked about this tire size:
What size rims fit a 255/30R21 tire?
This tire will fit onto 21 inch wheels.
What is the next size up from 255/30R21?
The tire sizes below are the next sizes up from 255/30R21. The table shows the increase in diameter and width for each option.
| Tire Size | Diameter (in) | Width (in) | Diameter Change | Width Change |
|---|---|---|---|---|
| 265/30R21 | 27.260 | 10.433 | + 0.236 in | + 0.394 in |
| 325/25R21 | 27.398 | 12.795 | + 0.374 in | + 2.756 in |
| 275/30R21 | 27.496 | 10.827 | + 0.472 in | + 0.787 in |
| 285/30R21 | 27.732 | 11.220 | + 0.709 in | + 1.181 in |
| 295/30R21 | 27.969 | 11.614 | + 0.945 in | + 1.575 in |
What is the next size down from 255/30R21?
The tire sizes below are the next sizes down from 255/30R21. The table shows the decrease in diameter and width for each option.
| Tire Size | Diameter (in) | Width (in) | Diameter Change | Width Change |
|---|---|---|---|---|
| 245/30R21 | 26.787 | 9.646 | - 0.236 in | - 0.394 in |
| 235/30R21 | 26.551 | 9.252 | - 0.472 in | - 0.787 in |
| 245/25R21 | 25.823 | 9.646 | - 1.201 in | - 0.394 in |
What does the 255 mean in tire size?
This represents the treadwidth of the tire. The tread is 255mm wide, or 27.024 inches wide.
What does the 30 mean in tire size?
This represents the sidewall height of the tire, as a percentage of the width. The sidewall height is 30% of 255mm, or 76.5mm, which is 3.012 inches.
What does the 21 mean in tire size?
This represents the wheel diameter that this tire size fits on. This tire size is meant to fit a 21 inch wheel.
