305/35R24 Tire Size
305/35R24 diameter, sidewall, revolutions per mile, and plus-sizing options.
The 305/35R24 tire size breaks down as: 305 mm section width, 35% aspect ratio, and a 24-inch rim. Below are its real, calculated dimensions.
305/35R24 Calculated Dimensions
| Metric | Value |
|---|---|
| Overall diameter | 32.4 in (823 mm) |
| Sidewall height | 4.2 in (107 mm) |
| Circumference | 101.8 in (2586 mm) |
| Revolutions per mile | 622 |
Typical Fitment
305/35R24 is most often found on custom lifted trucks. Always confirm against the door-jamb placard or owner manual before fitting.
Plus-Sizing Alternatives
These sizes keep the overall diameter close to 305/35R24, so speedometer and gearing stay near stock:
| Size | Diameter | Diameter change |
|---|---|---|
| 315/35R24 | 32.68 in | +0.9% |
Speedometer Note
If you fit a 315/35R24 instead of 305/35R24, the diameter changes by +0.9%. A taller tire makes your speedometer read low — at a true 60 mph it would show roughly 59 mph. A shorter tire has the opposite effect, so the gauge reads high.
Use the tire calculator to compare 305/35R24 against any other size and see the exact diameter and speedometer difference.
Frequently Asked Questions
What does 305/35R24 mean?
305/35R24 means a 305 mm wide tire with a 35% sidewall aspect ratio mounted on a 24-inch rim. The aspect ratio is the sidewall height as a percentage of the width.
Can I plus-size from 305/35R24?
Yes, as long as the replacement keeps the overall diameter close to stock so the speedometer stays accurate. Common plus-size moves from 305/35R24 are 315/35R24.
Will 305/35R24 affect my speedometer?
Only if it differs in diameter from your original size. A taller tire reads low; a shorter tire reads high. Compare the two sizes with the calculator to find the percentage.