Tires Size 305/30R20
Dimensions, specs, and every size 305/30R20 tire currently in stock
27.2"
691 mm · calculated
305 mm
12.01 inches
3.6"
91.5 mm · 30% profile
20"
508.0 mm
1 product
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305/30R20 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 | 30% | — |
| Sidewall height | 3.6 in | 91.5 mm |
| Overall diameter (calculated) | 27.2 in | 691 mm |
| Wheel / rim diameter | 20 in | 508.0 mm |
| Construction | Radial | — |
What does 305/30R20 mean?
Reading the code on your sidewall
305 mm
The distance from sidewall to sidewall across the tire's widest point.
30% profile
The sidewall stands 30% of the section width, which is 91.5 mm on this size.
Radial
The body plies run across the tire at right angles to the direction of travel.
20 in
Fits a wheel measuring 20 inches across.
305/30R20 Questions & Answers
Dimensions and fitment guidelines for size 305/30R20
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