Tires Size 245/40R21
Dimensions, specs, and every size 245/40R21 tire currently in stock
28.72"
729 mm · calculated
245 mm
9.65 inches
3.86"
98 mm · 40% profile
21"
533.4 mm
1 product
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245/40R21 Specifications
Read directly from the size code. Load index, speed rating, and rim width range vary by model.
| Specification | Imperial | Metric |
|---|---|---|
| Section width | 9.65 in | 245 mm |
| Aspect ratio | 40% | — |
| Sidewall height | 3.86 in | 98 mm |
| Overall diameter (calculated) | 28.72 in | 729 mm |
| Wheel / rim diameter | 21 in | 533.4 mm |
| Construction | Radial | — |
What does 245/40R21 mean?
Reading the code on your sidewall
245 mm
The distance from sidewall to sidewall across the tire's widest point.
40% profile
The sidewall stands 40% of the section width, which is 98 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.
245/40R21 Questions & Answers
Dimensions and fitment guidelines for size 245/40R21
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