Tires Size 245/640R18
Dimensions, specs, and every size 245/640R18 tire currently in stock
141.46"
3593 mm · calculated
245 mm
9.65 inches
61.73"
1568 mm · 640% profile
18"
457.2 mm
1 product
In stock · Free shipping on every order
Showing 1 to 1 of 1 products
245/640R18 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 | 640% | — |
| Sidewall height | 61.73 in | 1568 mm |
| Overall diameter (calculated) | 141.46 in | 3593 mm |
| Wheel / rim diameter | 18 in | 457.2 mm |
| Construction | Radial | — |
What does 245/640R18 mean?
Reading the code on your sidewall
245 mm
The distance from sidewall to sidewall across the tire's widest point.
640% profile
The sidewall stands 640% of the section width, which is 1568 mm on this size.
Radial
The body plies run across the tire at right angles to the direction of travel.
18 in
Fits a wheel measuring 18 inches across.
245/640R18 Questions & Answers
Dimensions and fitment guidelines for size 245/640R18
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