Tires Size 305/25R21
Dimensions, specs, and every size 305/25R21 tire currently in stock
27"
686 mm · calculated
305 mm
12.01 inches
3"
76.3 mm · 25% profile
21"
533.4 mm
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305/25R21 Specifications
Read directly from the size code. Load index, speed rating, and rim width range vary by model.
| Specification | Imperial | Metric |
|---|---|---|
| Section width | 12.01 in | 305 mm |
| Aspect ratio | 25% | — |
| Sidewall height | 3 in | 76.3 mm |
| Overall diameter (calculated) | 27 in | 686 mm |
| Wheel / rim diameter | 21 in | 533.4 mm |
| Construction | Radial | — |
What does 305/25R21 mean?
Reading the code on your sidewall
305 mm
The distance from sidewall to sidewall across the tire's widest point.
25% profile
The sidewall stands 25% of the section width, which is 76.3 mm on this size.
Radial
The body plies run across the tire at right angles to the direction of travel.
21 in
Fits a wheel measuring 21 inches across.
305/25R21 Questions & Answers
Dimensions and fitment guidelines for size 305/25R21
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