Tires Size 255/55R20
Dimensions, specs, and every size 255/55R20 tire currently in stock
31.04"
788 mm · calculated
255 mm
10.04 inches
5.52"
140.3 mm · 55% profile
20"
508.0 mm
Showing 11 to 12 of 12 products
255/55R20 Specifications
Read directly from the size code. Load index, speed rating, and rim width range vary by model.
| Specification | Imperial | Metric |
|---|---|---|
| Section width | 10.04 in | 255 mm |
| Aspect ratio | 55% | — |
| Sidewall height | 5.52 in | 140.3 mm |
| Overall diameter (calculated) | 31.04 in | 788 mm |
| Wheel / rim diameter | 20 in | 508.0 mm |
| Construction | Radial | — |
What does 255/55R20 mean?
Reading the code on your sidewall
255 mm
The distance from sidewall to sidewall across the tire's widest point.
55% profile
The sidewall stands 55% of the section width, which is 140.3 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.
255/55R20 Questions & Answers
Dimensions and fitment guidelines for size 255/55R20
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