Tires Size 255/40R20
Dimensions, specs, and every size 255/40R20 tire currently in stock
28.04"
712 mm · calculated
255 mm
10.04 inches
4.02"
102 mm · 40% profile
20"
508.0 mm
1 product
In stock · Free shipping on every order
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255/40R20 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 | 40% | — |
| Sidewall height | 4.02 in | 102 mm |
| Overall diameter (calculated) | 28.04 in | 712 mm |
| Wheel / rim diameter | 20 in | 508.0 mm |
| Construction | Radial | — |
What does 255/40R20 mean?
Reading the code on your sidewall
255 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 102 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.
255/40R20 Questions & Answers
Dimensions and fitment guidelines for size 255/40R20
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