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Best 38x15.50R18 tires

3 rated tires available in this size, scored on dry, wet, snow, comfort and wear.

Top pick in 38x15.50R18

Yokohama Geolandar X-MT

103 owner reviews

Check price on Amazon · 38x15.50R18 Read the review

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Compare two 38x15.50R18 tires side by side

Every rated 38x15.50R18 tire, by season

Ranked by our Relative score, weighed against how many reviews and tests stand behind it.

How scores work
Relative score
0–100. Blends road tests (60%) and owner reviews (40%) category by category, the same way on every TireWheelGuide page. With only one of the two, it uses that one.
Ranking
A score backed by only a few reviews or tests is pulled toward the typical score before ranking, so a 95 from a dozen reviews can rank below a 92 from hundreds.

Best 38x15.50R18 all-terrain tires

1
  1. Cooper Discoverer STT PRO

    358 owner reviews

    88 Check price on Amazon · 38x15.50R18

Best 38x15.50R18 mud-terrain tires

2
  1. Yokohama Geolandar X-MT

    103 owner reviews

    88 Check price on Amazon · 38x15.50R18
  2. Toyo Open Country M/T

    104 owner reviews

    87 Check price on Amazon · 38x15.50R18

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38x15.50R18 in inches

Overall diameter38″
Section width15.5″
Rim diameter18″
Sidewall height254 mm
Circumference119.4″
Revolutions per mile530.7

Revolutions per mile: how many times the tire turns in one mile, the count your speedometer is calibrated to.

What rims fit 38x15.50R18 tires?

A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.

Minimum
11″
Ideal
12.5″
Maximum
14″

The rim diameter is fixed at 18″; only the width can change. Rims are usually 70–90% as wide as the tire’s 15.5″ section width.